Melbourne

Meeting the demand for safer, more efficient and capable railways

While digitalisation can realise great advances, overcoming application factors in digital train control involved takes smart engineering.

Although comprising a number of different, discrete technologies, digital train control systems represent one of the most significant changes in 100 years of rail signalling.

Older systems across Australia and New Zealand are undergoing a fundamental and wholescale shift as railway operators strive to maximise performance and capacity.

This presents a tremendous opportunity to improve rail capability and competitiveness across existing networks, extensions and new lines in both metro and mainline applications.

Replacing line-side multi-aspect colour light signalling with Digital Train Control (DTC) systems promises to bring improvements in line capacity, connections, reduce journey times and improve safety and performance, among an array of other benefits.

In Australia, there have been disparate drivers for the adoption of DTC, however increasingly these technologies enable significant innovation, both in freight operations, with Rio Tinto’s fully automated railway, and in passenger services with the fully automated Sydney Metro Northwest.

David Milburn, GHD global leader – Digital Train Control explains how transport organisations can maximise value from digital investments regardless of the specific rail technology and the context of its application. Milburn has decades of experience in leading Train Control and Systems Engineering (SE) teams for major programs, and has been successfully applying SE techniques to railway projects since 1996. Milburn has worked on a range of signalling systems and related standards, specialising in transmission-based signalling such as ETCS and CBTC.

“We help clients to become informed purchasers. Each technology has distinctive characteristics appropriate to different train control scenarios and our knowledge in both DTC and legacy signalling systems enables us to identity and manage risk in a safety critical environment.”

As an umbrella term, DTC includes systems such as Automatic Train Operation (ATO), Automatic Train Protection (ATP), European Train Control System (ETCS), and Communications Based Train Control (CBTC), among other variants. Each network will ultimately find a solution that fits best with their operation and funding highlighted Milburn.

“We provide agnostic solutions and advice to help clients find what best fits their particular needs and help them to navigate different products and different suppliers to get the most appropriate solutions.

“This involves selecting the right concept for their particular railway, and then providing technical leadership and project engineering to bring that into the physical infrastructure,” said Milburn.

There are various stages of automation in digital train control.

STARTING FROM SAFE
While railways have had more than 100 years of history to determine the best practice for traditional lineside signalling, the relatively new status of DTC requires a risk-based approach to safety that works to identify and minimise any potential unplanned events.

“Most operators have spent decades working in a particular manner. The rules have been developed over a long period of time, often as a reaction to incidents and accidents and to accommodate a particular technology. One of the key challenges when you’re introducing new technology is to identify and manage all the potential risks before day one of operation,” said Milburn.

GHD works with operators and suppliers to develop specifications and standards that can be applied in the implementation of DTC systems in Australia.

“We can work with clients to support them in developing their concept of operations, how their system is going to work, provide analysis to make sure that they have got the right concept, and develop engineering rules, and operational rules to efficiently and safely manage the system and to meet the operational concept.”

While there will often be local variations in developing standards for train control systems, GHD can draw on its global network, in collaboration with partners, to define and implement DTC systems to meet the needs of a particular application.

Already, 42 cities run 64 fully automated metro lines, with the first mainline- passenger with ATO over ETCS service on the Thameslink project in London, in March 2018. In total, there are over 100,000 kilometres of ETCS equipped infrastructure around the world.

Taking lessons from these projects, GHD is advancing its approach to efficiently support the delivery of DTC systems projects in Australia.

To ensure that depth of knowledge can be applied to each project, GHD has worked to build up a talent pool of those who have hands-on knowledge of application and integration issues in other contexts where DTC has already been applied.

“Even when the technology is successfully deployed, in some cases it can’t actually be fully implemented because the railway administration hasn’t completed the necessary organisational and business change, or the training and competence of people,” said Milburn.

David Milburn has worked on a number of digital train control projects around the globe.

GLOBAL EXPERIENCE – LOCAL EXPERTISE
Understanding both the human and technological side of DTC systems has led to recognition that having the right expertise is key to driving successful and transformational DTC systems. This is what GHD is providing in Australia, whether playing the role of an independent certifier, as GHD did in the Sydney Metro Northwest project, project management, business case development, or systems integration.

“The first part of that is creating a pool of resource and pool of expertise,” said Milburn. “A lot of clients are encountering this technology for the first time. They are working on projects without the comfort of having first hand previous experience but we are building a team of people who have successfully deployed these very specialist technologies.”

While train operators may have a wealth of expertise in traditional signalling technologies, DTC systems require a new set of competencies, both during installation and operational phases.

There is an acute skills shortage in Australia when it comes to DTC. GHD has been working to develop a local knowledge base and provide the necessary upskilling and support to signalling engineers in Australia. Where appropriate, GHD has recruited engineers with a proven track record on successfully completed overseas projects.

“We’re working hard to establish a training facility for digital train technologies, both for generic approaches and principles as well as more detailed competencies, and courses for maintenance and design.

“At the moment, there’s a huge gap between the number of projects and the resources required in Australia,” said Milburn.

AVOIDING THE MISTAKES OF THE PAST
With a number of DTC systems already in operation, each with their subtle different operational methodologies, and a number of projects in their early stages, the value of standardisation cannot be understated. This is vital to ensure that Australia does not repeat the mistakes made in the last century by having approaches unique to each state or operator. Already, Milburn is seeing Australia head in this direction.

“We’ve seen a number of instances in Australia, where organisations have taken off-the-shelf ETCS technology, and then worked with the supplier to add additional functionality important to their respective needs,” said Milburn.

“For example, the introduction of ATO over ETCS, with the introduction of satellite positioning. These are all functions outside of the European standards at the moment but it would be hugely beneficial for the industry to work together to avoid significant and costly problems in the future”.

The establishment of ETCS was aimed at overcoming these issues in Europe, where, for example, trains on the Paris – Brussels – Cologne line traversed seven different train control systems, from more than 20 train control systems in the EU.

“Australia now has the opportunity to standardise so that you have common competencies across state and organisational boundaries.”

Further measures to reduce crowding across Sydney Trains

Sydney Trains will be taking extra steps to ensure crowding on the network does not return once patronage increases following the coronavirus (COVID-19) lockdown.

In responding to a report from the Auditor-General for NSW which found that platform crowding was a key strategic risk, a Sydney Trains spokesperson said that a raft of measures are being introduced.

“Sydney Trains is currently implementing a number of initiatives to help customers make informed decisions about physical distancing in accordance with NSW government advice,” said the spokesperson.

“These include increased visibility through signs and announcements on trains and at stations explaining physical distancing. Additional measures include a communication campaign targeting school children, managing Opal gates to space customers entering and leaving stations, new guidelines for passenger numbers on lifts, regular customer information announcements and social media messaging, and staff education to help guide customers safely around the network.”

In its report, the Auditor-General recommended that Sydney Trains and Transport for NSW (TfNSW) should address key data gaps in the operator’s understanding of where crowding was occurring.

“Sydney Trains do not have sufficient oversight to know if crowding is being effectively managed,” said the Auditor-General.

Although customer management plans exist for high-patronage stations, a lack of policy supporting the plans limited their effectiveness, the auditor-General found, and a centralised collection of data on crowding interventions did not exist, nor did Sydney Trains have a routine process for identifying whether crowding contributed to minor safety incidents.

Sydney Trains and TfNSW accepted the Auditor-General’s recommendations and have been instituting responses to limit crowding.

“In March last year, we saw the introduction of the $296 million world class Rail Operations Centre, with an integrated network of 11,000 digital cameras monitoring stations and concourses in real-time to help support crowd management and safety,” said a Sydney Trains spokesperson.

The Auditor-General also cited larger programs such as the More Trains More Services initiative as well as the building of Sydney Metro will alleviate network pressure in the longer term.

Research and technology programs are also looking at how to smoothen operations and changes customer behaviour. The Auditor-General found that some of these initiatives, such as reduced fare prices outside of the peak travel periods and improved wayfinding, needed to be evaluated to assess their value.

The effectiveness of measures to reduce crowding will be one way to encourage commuters to return to public transport. In the preliminary findings of a University of Sydney survey, public transport was found to be seen as significantly less comfortable than private cars, which could limit the use of trains and buses after COVID-19 restrictions are lifted, said associate professor Matthew Beck from the Institute of Transport and Logistics Studies.

“To avoid levels of congestion that exceed those experienced prior to COVID-19, governments need to encourage work from home as much as possible. Businesses also need to be flexible with remote working and think about how they might stagger the hours of the day staff travel to and from work.”

According to Sydney Trains, continuing normal services levels has allowed customers to physically distance on trains and platforms.

“We have also continued to run a full timetable with only minor adjustments, despite substantially reduced patronage across the network. This has created the best options for customers to physically distance within train carriages and at stations.”

Industry-government group to accelerate ATMS delivery

An industry-government oversight group has been formed for the introduction of the Advanced Train Management System (ATMS) on Australia’s interstate freight rail network.

With the system now operational between Port August and Whyalla and ready to be deployed between Tarcoola and Kalgoorlie, the industry-government reference group will streamline implementation between the Australian Rail Track Corporation (ARTC) and nine major rail freight businesses.

“I meet and consult with industry regularly and following discussions in March, the Australian government has agreed to support the establishment of the group to explore opportunities to accelerate the deployment of ATMS,” said Deputy Prime Minister and Minister for Infrastructure, Transport and Regional Development Michael McCormack.

The federal government has provided $110.8 in funding for the development of ATMS, which alleviates the reliance on trackside signalling infrastructure by using GPS navigation systems and mobile internet. The system was developed by Lockheed Martin on behalf of ARTC.

“It has been custom-engineered and tested under Australian conditions and has proven both its safety and capability required for a staged deployment across the wider national interstate rail network operated by ARTC,” said McCormack.

“The system is in the final stage of being certified as the primary safe working system between Port Augusta and Whyalla with the next section for deployment to be between Tarcoola and Kalgoorlie from next year.”

The industry-government oversight group will provide industry engagement and agreement on the approach, roll-out, staging strategy, and funding for ATMS. In mid-2020 the group is expected to provide advice on the broader rollout of ATMS.

Chair of the Freight on Rail Group, which represents the nine major freight businesses involved in the oversight group, Dean Dalla Valle, said that the system will improve Australia’s rail freight network.

“ATMS will vastly improve rail safety by allowing freight trains to be remotely controlled during an emergency, including automatic braking, and boost efficiency of services on both dedicated freight lines and shared rail networks.

“ARTC has ensured industry was at the forefront of consultation over the ten years of development of the new technology and FORG will continue that collegiate-approach through this working group to help fast-track the roll-out of ATMS,” said Dalla Valle.

By allowing for more efficient use of the freight rail network, ATMS is expected to increase rail capacity, as well as reliability and safety.

“To help recover from the deep economic shocks of the coronavirus pandemic, Australia must embrace and leverage new and improved technologies throughout its national supply chains,” said Dalla Valle.

“Its home grown, state-of-the-art technology which our sector and the Australian people should be very proud of.”

Caroline Wilkie, CEO of the Australasian Railway Association (ARA), said that the group has been formed at the right time.

“The creation of the oversight group will bring significant industry knowledge to the table to guide this important next phase of the project.”

Finance Minister Mathias Cormann said that improvements to the rail network will deliver benefits for the wider community.

“A well-developed rail network will help better connect our regions with our cities, our ports and beyond, ensuring that Australian businesses can sell as many products and services as possible into markets around the world while also making sure that domestically we are in the strongest possible position,” said Cormann.

“Our government looks forward to engaging with industry to drive improvements and further strengthen our rail sector.”

The use of data in digital rail

Nuno Guerra, who is leading Thales Australia’s Metro agenda, explains how the implementation of digital rail systems can benefit a network operator.

Australia’s major cities are growing at an exponential rate, and pressure is being placed on infrastructure and transportation services to improve operational efficiencies and the passenger experience. A digital revolution in smart-mobility is already occurring, allowing town planners to manage and capitalise on these pressures. Rail infrastructure will play a central role in this revolution, with disruptive technology enablers such as artificial intelligence (AI), big data analytics, the industrial internet of things (IIoT), and cloud computing driving its transformation.

In Australia, both Sydney and Melbourne are at the forefront of the rail revolution: Sydney announced the North West Metro in 2008 and the new CBD and South East sections of its Light Rail in 2014. Both projects are now complete and open to the public. Similarly, Melbourne has announced its Melbourne Airport Rail Link – a critical connection between Tullamarine Airport, the metro, and regional networks – and the Suburban Rail Loop, both scheduled to begin construction in 2022.

Rail networks are awash with data and, with projects like those we are seeing in Sydney and Melbourne, the potential for utilisation is immense. Though there are many assets that incorporate and utilise digital technologies, only a fraction of this data is captured and analysed to generate actionable insights and improvements for customers and efficiencies for operators. There is potential for operators to boost revenue by as much as 30 per cent by implementing data-driven decision-making capability into their networks.

COMPETITION
When comparing the rail sector to the likes of road transportation, there has been an explosive growth of ride sharing apps and online booking platforms. The roads sector has successfully leveraged data and used technology to connect directly with the customer and as a result built a competitive edge. The rail sector, by comparison, has not capitalised on data at the same pace. However, the rail industry is at the threshold of a major transformation in this data revolution. The benefits of rail travel to the community are hard to dispute, with each passenger journey made by rail rather than road generating benefits for society of between $3.88 and $10.64 by reducing congestion, accidents, and carbon costs, according to the Value of Rail report produced by Deloitte Access Economics for the Australasian Railway Association.

WHAT ARE THE MAIN DIGITISATION AND SMART-MOBILITY PRIORITIES?
The keys to success when it comes to digital revolution and smart-mobility, which are at the forefront of Thales’s development roadmap are safety and security, efficiency, and reliability. These shape our thinking in terms of what we aim to achieve in a smart network and address the five key digitisation priorities that are outlined below.

First and foremost, improvements in safety and security are paramount – Thales’s safety and mission critical systems such as signalling and supervision & control systems are digital and cyber secured by design by default, providing real-time data on congestion, occupancy, and security.

In relation to cyber-security, the digital railway presents a special challenge to traditional security measures due the deployed nature of the assets and their susceptibility to hackers. Thales has tackled these issues using a two-technology approach – traditional IT network security and ‘edge’ security (referring to devices deployed in the field). Thales Cybersecure by Design services focus on early threat detection and segmented networks to limit the access of direct connections outside the network. The ‘edge’ devices that make up the IIoT are manufactured under stringent security guidelines to ensure access points are not exploited, and reduce the risk of counterfeits and clones. Through limiting and securing access to these geographically scattered devices, organisations are also able to maintain tighter control and lower device maintenance and update costs. These technologies give operators confidence that their data and operations are safely expandable and secure.

The second priority is reducing maintenance and operational expenditure. Unplanned shutdowns are a major problem for operators, accounting for hundreds of millions of lost revenue per year. Research has shown that the top cause of unreliability is external problems, followed by signalling and train issues. To counter this challenge, we can tap into existing data sources such as Communications-Based Train Control (CBTC) systems, axle counters and point machines and use big data analytics algorithms to detect abnormal behaviour and predict maintenance requirements. This is the primary function of Thales’ digital TIRIS solution – processing hundreds of terabytes of data to monitor, in real-time, equipment installed on-board trains and along thousands of kilometres of track. The aim is a zero unplanned maintenance approach and customers have seen maintenance costs reduced by 30 per cent, site visits down by 50 per cent and overall downtime reduced by 40 per cent.

Thirdly, digital systems must help increase capacity. Data on passenger journeys, train occupancy, and platform crowding has enormous potential when taken in isolation, however, when combined and processed using big data analytics and AI, greater potential can be unlocked. The Thales NAIA solution processes passenger data in near- real time, allowing operators to discover and predict passenger behaviours, detect friction points in traffic flow and adapt staff and train services according to passenger demand. The flow-on benefits to train occupancy and capacity will have a distinct improvement on operational efficiency and customer satisfaction.

Asset availability presents the fourth priority. The ability to manage mobility across an entire city, and ensure availably and reliability of assets to meet passenger and freight demands is a critical challenge. Network visibility and real-time asset management enables more effective tools to manage this challenge. Multimodal Operation Control Centres (OCCs) provide these tools by tapping into multiple data sources and the industrial internet of things to create an ‘intelligent infrastructure’. Creating a dynamic visualisation of digitised assets across the network, enhancements to traditional systems such as signalling and interlocking systems will feed into this framework, exceeding current capabilities to increase frequency of operations and reduce delays.

Finally, digitisation must improve the passenger experience. As evidenced above, these modular digital solutions will combine to benefit the passenger in many ways. Ready access to comprehensive data will enable operators to make informed decisions on operations and maintenance to better manage passenger flow, train occupancy and wait times. Similarly, the passenger will benefit directly by more accurate and real-time information on congestion and delays. The Thales Central Control System (CCS), recently delivered on the Sydney Metro North West, is already providing this real-time information.

These disruptive technology enablers mean big change for the rail sector in Australia, and a leap forward for the smart-city architecture that is revolutionising our cities. Thales is at the forefront of this digital revolution, combining our global expertise in ground transformation with our data-driven digital service solutions to provide end-to- end solutions for our customers.

digital rail

The digital rail revolution

As one of the leading providers of digital technology in the digital rail sector, Mark Coxon of Alstom explains what changes rail can expect to see in its digital future.

Since the beginning of the modern era, rail has been closely connected to each major industrial innovation. Initially, in the first industrial revolution, the use of steam to textile mills was almost as iconic as the steam-powered train engine, which became the symbol of increased productivity and modernisation during the 19th century.

In the next era, the adoption of hydrocarbons as a source for fuel also enabled the diesel train, able to haul large loads for transcontinental journeys. Simultaneously, widespread electrification and the urbanisation of worldwide populations saw the adoption of electric, underground metro services that have kept crowded cities moving. Now, as the information revolution looks to set to be the next defining wave of innovation, train technology is leading the way in innovation.

Alstom is one of the early adopters of the digital wave in rail, and indeed has become one of the drivers. The significance of this shift is not lost on Mark Coxon, managing director of Alstom Australian and New Zealand.

“Digital Railways doesn’t have quite the romantic ring of the great train services of the past – the Orient Express, the Canadian Pacific or the Trans-Siberian. But digital is the next big wave in the railway sector, and train users can look forward to higher service standards, more timely information and even better ticket pricing,” he said.

The two primary technologies that have come to define digital rail are digital train control and digital signalling. Although there is an array of other technologies, according to Coxon, these tools will have a fundamental impact on the evolution of rail during the current industrial revolution.

“Digital signalling and digital technologies in general will have a huge influence on the evolution of rail services. They are just the latest developments in an industry that has a great track record (pun intended) of technological innovation. From steam to diesel to electric power, the railroad’s evolving technologies have unleashed economic potential and social mobility wherever the rails were laid.”

Indeed, the new technologies exist in order to improve the usefulness of rail networks, rather than being a cosmetic add on.

“Today we are entering an age where digitalisation allows operators to have real- time information on train movements and analyse overall performance – ultimately reducing costs by streamlining processes and improving efficiency and reliability,” Coxon said.

UNLOCKING THE URBAN
For many cities, including Australia’s urban centres, the efficiencies promised by digital rail could not come soon enough. Traditional signalling systems have reached the end of their useful life, while patronage continues to increase. Additionally, building new rail lines through cities is often not an option, and tunnelling underneath poses significant cost challenges. This has put pressure on existing technology, said Coxon.

“Railways have been part of the urban landscape for so long that networks in many countries have become extremely dense, especially on commuter lines in major cities, making it difficult and costly to implement major upgrading projects. Instead, the kind of improvements in efficiency that digital technology excels at can have massive operational impacts.”

Digital rail can also extend to find connections with other forms of transport, across heavy rail, metro, light rail and also bus and micro-mobility networks. Finding these efficiencies in the digital ecosystem can deliver major benefits to transport and city planners.

“Digital technologies hold out the promise of true transport integration, linking main-line rail services with other urban transportation modes, enhancing efficiency and passenger convenience,” said Coxon. “The introduction of Information and Communications Technologies (ICT), Intelligent Transport Systems and open- data/open-source transport applications are transforming urban transportation, optimising the efficiency of existing and new urban transport systems, at a cost much lower than building new infrastructure from the ground up.”

Within the railways themselves, the enhanced data and feedback gathered by digital sensors form a connected railway that can reduce costs and improve service delivery.

“New transport data collection technologies are also being deployed to provide information about delays, downtime, and predictive maintenance which could lead to huge improvements in service standards, safety, and unlocking the potential of railways. Passengers will also be able to make real-time decisions about their journeys based on the features that matter most to them such as reliability, safety, travel time, and cost,” said Coxon.

In addition, as governments and individuals increasingly identify a project’s sustainability as a key factor, adopting the digitalisation
of railways can enable railway operators to reduce energy usage, improving air quality, while also delivering a seamless experience for the commuter.

“Enhanced safety, predictive maintenance, and automated driverless operation are all part of rail’s future,” said Coxon.

PUTTING THE PASSENGER FIRST
Perhaps an even more fundamental shift will be occurring in the way that passengers interact with transport. Currently divided into discrete journeys often limited by transport mode, a connected digital railway can enable the rise of Mobility as a Service (MaaS). Via data-enabled apps, commuters can move through transit modes made as one seamless trip, with real- time information to smoothen the transition.

“From the passenger’s perspective, access through online apps to real-time information on travel times, potential service interruptions, ticket prices, seating arrangements and even on the least crowded places to wait on a station platform, will enhance convenience and reduce the stress of travel,” said Coxon.

Reducing disruptions also enables transit time to fit into the other rhythms of daily life, with enhanced services available onboard.

“Railways today offer a connected service all along the passenger journey with on-board Wi-Fi for internet and entertainment options. Passengers are able to experience these services using their own mobile devices –laptops, tablets and smartphones,” said Coxon. “This approach to train connectivity can unquestionably deliver a significantly improved passenger experience.”

These developments occur as part of a strategy of putting the individual first, rather than forcing the individual to comply with the requirements of the service.

SEIZING THE DIGITAL FUTURE
However, just as digital rail offers solutions, there are challenges too, as Coxon acknowledges.

“The path to digitalisation will not, of course, be entirely smooth.”

The benefits of digital rail require collaboration and coordination between companies, agencies, and organisations that have up until now existed in their own silos, with limited interaction. In addition, the skills and knowledge that is required to build and run a digital rail system is quite different to those needed in an analogue rail environment, although Coxon notes that these changes could have their own benefits.

“Despite the challenges, the railway sector’s move to digitalisation is clearly unstoppable. Digital technology in the railway sector will see a shift from the traditional emphasis on heavy engineering, to software and data handling skills. In the future, once the hardware is installed, upgrading a signalling system will no longer require hundreds of workers out on the tracks; it might be more like upgrading the software on your phone.”

Getting to this digitally enabled future may require some difficult transitioning, however through collaborating across industry lines, returns can be found.

“Rail operators should take this digitalisation opportunity to integrate different mobility options into their existing offering and consequently focus on value creation through innovation,” said Coxon.

“Without a doubt, it is the quiet efficiency of digital technology that will take rail systems and their passengers into a new age of rail travel that is safer, more convenient and comfortable, more economical, and more climate-friendly.”

Sentinel Safety

Sentinel Safety brings the latest AI technology to protect pedestrians in the rail industry

The risk of injury and near misses for workers around mobile plant and machinery is always a concern during the construction and maintenance of railways where separation of people and plant is not possible. To date, most hazard prevention technologies involve a tag-based system or administrative controls which are not always the most comprehensive solution to the dynamic rail maintenance and construction environment.

Developed over three years by an in-house team of Brisbane-based engineers, PRM Engineering Services have produced the Sentinel Vision A.I. pedestrian detection system, for the specific safety requirements of the rail industry. The system uses the latest in artificial intelligence and pedestrian recognition to detect when a pedestrian is in a machine’s blind spots or enters hazardous zones near mobile machinery, warning both the operator and the pedestrian.

Working in real-time, the Sentinel Vision A.I. system incorporates multiple cameras, that are mounted to mobile machines such as wheel loaders, excavators, and on-track vehicles with as many or as few cameras installed as needed to cover blind spots and assist the operator in identifying people around the machine. Sentinel Vision A.I. is the first pedestrian detection system to alert both the operator and pedestrian. This innovation has been found to cause long-term behavioural change in pedestrians working around mobile plant and machinery. Sentinel Vision A.I. uses a unique voice alarm system to ‘talk’ to the pedestrian, cutting through the beeps and buzzes that that workers hear on sites every day.

The system has been trialled by several top tier rail authorities with positive results and many have reported that when people are alerted by the voice alarm, behavioural change and greater awareness of risky behaviour around mobile plant is achieved. Ideally, over time, Sentinel Vision A.I. will be activated less as people have learnt not to walk in front or behind active vehicles, reducing the risk of accidents and injuries.

The system takes images from the detection cameras and then processes the information through an A.I. neural network to determine if there is anything that looks like a person, or part of a person, and if there is, it triggers internal and external alarms. Detection zones are customisable and determined with an easy to use drag and drop interface, and an additional option of pre-warning zones.  The system has been trialled and used in a range of different operating environments and environmental conditions with positive feedback.

Sentinel Vision A.I. is one of a number of innovative products developed by PRM Engineering Services. Part of the PRM Group of companies, which has been providing safety systems and equipment to the rail industry for over 20 years, PRM Engineering Services designs bespoke safety and control systems that meet the unique needs of operators. Through our partnerships and experience gained in the rail and heavy machinery industries, PRM Engineering Services’ range of Sentinel Safety systems were developed to meet the changing safety and risk management requirements of rail authorities.

The Sentinel Safety range also includes several Height and Slew limiters used throughout the rail and construction industries to allow safe operation around powerlines and within confined spaces. The Sentinel Height and Slew limiters have been used by rail authorities Australia wide for a several years and can be retrofitted to any machine with articulated booms.

Based on this experience PRM has also recently released additional optional features including HV detection and RFID for attachment recognition. By combining the functionality of our widely used Sentinel Height and Slew limiters with a patented Sentinel HV Aerial Module, the system can ensure safe operation around powerlines from the moment the machine is turned on. The system prevents the machine moving within the exclusion zone around powerlines and motion-cut valving prevents the machine from moving closer while allowing the operator to direct the machine away from the electricity source.

The Sentinel Height and Slew limiters are perfect for the safe operation of excavators, loaders, skid steers and backhoes when working under overhead powerlines, in and around bridges and inside tunnels and can be installed on new and old machines alike. The Sentinel Height and Slew limiters also have are range of rail specific systems to the meet the machine safety requirements of multiple rail authorities and councils.

PRM Engineering Services are passionate about safety and have a long-standing heritage of safety system design and installation since 2002. With experience in the rail and earthmoving industries, PRM Engineering Services have become integrators and developers of a number of unique safety and control systems that meet customer requirements. These projects have ranged in scope from customisations of height or slew systems through to full redesign of control systems for on-track rail vehicles. Along with our team of talented engineers, the PRM Group of companies can also assist with the installation or modification of electrical, hydraulic, and control systems for heavy machinery, enabling PRM Engineering Services to offer end-to end innovative and customised solutions to our wide range of customers.

Find out more at: https://www.sentinelsafety.com.au/.

Innovation in the world’s largest tram network

Melbourne’s iconic tram network operates across 250km of double track. Xavier Leal from Keolis Downer shares Yarra Trams’ latest innovation strategy that is digitising the network’s 5,000 daily services.

The world’s largest operational tram network has been transporting passengers in Melbourne for over one hundred years. Xavier Leal, manager of innovation and knowledge at Keolis Downer, acknowledges that operations throughout the urban tram network have considerably advanced since the first tram line was pulled by horses in 1884. As the operator of Yarra Trams, Keolis Downer has been investing in its digital strategy to prioritise data collection and improve passenger experience.

Leal has almost fifteen years of experience in strategy and innovation management. Since he joined Yarra Trams in two years ago, he has been driving forward innovations in the business that support enhanced passenger experience, operational effectiveness, and safety in the network.

Before his current role at Keolis Downer, Leal worked in the mobility and transport sectors in Europe. He has led a wide range of international projects that explored digital innovations and defining technology diffusion processes. His previous projects include developing innovative information and technology services, including T-TRANS and Collective Intelligence for Public Transport in European Cities (CIPTEC). Leal said Keolis Downer leverages its worldwide operational experience to explore innovations in smart cities through a digital mobility observatory.

Leal highlighted that it is important to note the difference between tram networks in Europe and Melbourne to understand how investment in processes will allow Melbourne to set an international benchmark for light rail infrastructure.

“Melbourne has a unique tram network. Trams elsewhere don’t have the same challenges that we have here. Not only is it the world’s largest operational tram network with over 250km of track and more than 1,700 stops across the city, but 75 per cent of the network is shared with road vehicles,” Leal said.

This means trams do not have separated corridors on Melbourne roads and operate amid buses, cars, cyclists, and pedestrians. This brings particular challenges with safety and operational performance, particularly travel times. Melbourne’s tram network could run more efficiently. To enhance network capability, Yarra Trams have used technology to enable faster services.

However, due to the nature of having assets distributed widely across the network, including the vehicles themselves, stations, and other monitoring points, there is the potential for the accumulation of digital data to support the more efficient operation of the network. Yarra Trams has recognised this, and is looking to digital innovation, with a number of projects deployed to target priorities including faster travel times, reduced disruptions, and customer safety. These initiatives include digitising asset management through real time-based platforms, to exploring crowdsourcing of data for safety and unplanned disruption management.

One project that Yarra Trams has trialled is the on-board collection of image-based data on traffic. In developing the technology, Yarra Trams took a consultative and collaborative approach by incorporating feedback from multiple stakeholders which come into contact with the relatively open network.

The development team looked to how they could incorporate real time data on traffic volumes to maximise operational efficiency and passenger experience. However, solutions were not always going to come from within the organisation, and Yarra Trams looked for partners who could enable this digital data project.

“Effectively engaging with the innovation ecosystem is another critical success factor to maximise digital technologies,” Leal said.

Keolis Downer collaborated with the Australian Integrated Multimodal Ecosystem (AIMES) to procure Toshiba’s traffic sensing technology. Leal said the data collection and analysis system was based on image processing and deep learning technology in a smart transport cloud system. A trial of traffic sensing by on-board unit (OBU) based image processing technology took place in March 2019 with two C2 trams travelling on route 96 from Brunswick East to St Kilda Beach.

Leal said the trial tested the capability of the technology to detect various states of traffic by deploying image processing techniques and transmitting the results to a cloud system. The OBU could detect traffic in terms of volume, vehicle queues, vulnerable road users, pedestrians and obstacles.

HD cameras captured real time traffic and processed and measured the information as it happened. The information collected from vehicle queue lengths waiting at red signal and pedestrian flow assessed traffic conditions to
a degree, while also detecting obstacles and service adjustment.

The OBU system consists of three units, a stereo camera, image processing hardware, and a signal divider. The OBU system sends detection results back to a central server. These results include images that have been tagged with GPS data. The trail enabled Yarra Trams to obtain geographically precise data to illustrate issues in the network in real time, enabling faster responses and comparisons with historical data.

The digital data collected throughout this trial may allow traffic management and operation control staff to instantly evaluate risks as well as predict needed safety measures.

Images taken by trams are used to map pedestrians and crowds.

“It was a successful project,” said Leal. “We assessed the system capabilities
to detect traffic volumes, vehicle queue lengths at intersections, pedestrian crowd volume detection and estimation around tram infrastructure. Now we are discussing with Toshiba, government stakeholders, and Melbourne University researchers the next steps to further evolve the system,” Leal said. Leal is proud to pioneer the use of digital data to evaluate complex transport networks. He said it’s not uncommon for large networks such as the Melbourne tram network to experience unplanned disruptions, so managing data from Yarra Tram allows a clearer understanding of behaviour of motorists, pedestrians, and other vehicles which the network comes into contact with.

Leal said trams and light rail services are the lifeblood of Melbourne, as they are the primary mode of public transport for inner suburban residents. Globally, more than 200 cities are now recreating, building, or planning tram networks. If the Melbourne network were to be rebuilt today, it would cost more than $20 billion and take several decades to complete.

“It’s important to us to have a holistic approach to our digital strategy, that leverages Keolis’s expertise in mobility and digital technology with a robust data management platform that aligns with the Department of Transport’s systems and tools,” Leal said.

“We are increasingly gaining more data flowing from digital channels. From a passenger experience perspective, it is important for us to integrate reporting capabilities with analysis of inputs coming from diverse channels,” Lead said. He said the company expects these channels to grow and further diversify as new streams of data and incorporated into the network.

“We are committed to keep pushing for further integration of information and data to ensure the right actions are taken to enhance Melbourne’s dynamic network,” he said.

Digitalisation an enabler for network change

Warwick Talbot, acting executive director, future network delivery at Sydney Trains explains how Sydney Trains is rolling out its Digital Systems Program and the key principles driving the project.

As a 40-year plan for NSW’s future, no one could accuse the Future Transport 2056 plan of not being ambitious. As part of a suite of plans, the strategy sets out the vision for how the people of greater Sydney and NSW will get around in the mid 21st century. At the core is the Sydney network, which will be the veins pumping people through the metropolis of three connected cities.

Riding the trains, metros, and light rail services of Sydney in 2056 will be forecasted 12 million residents of NSW, and the roughly 8 million Sydneysiders will be making greater use of the heavy rail network than they do now, with fewer trips made by private car. By 2056, the transport network will need to handle 28 million trips a day. In outlining his vision for the state, NSW Transport Minister Andrew Constance wrote that a key element of the plan is its use of technology.

“It is the first transport plan in Australia to harness technology to improve customer and network outcomes, and it starts with a long-term vision for our communities,” wrote Constance.

Already, the technological building blocks of this new network are being put in place, and while 2056 may seem far away, Sydney Trains has begun implementing the first stages of the Digital Systems Program to enable the city’s over 150 year old train network to meet the demands of the city as it continues to grow. The focus of the Digital Systems project is to enable this existing network to meet future demand, described Warwick Talbot, acting executive director, Future Network Delivery at Sydney Trains.

“The key driver is the demand that we forecast on our network and we need to increase capacity.”

Talbot noted that two key components of the network currently limit capacity; the signalling system and train dwell times.

Announced in 2018, the Digital Systems Program links these two components of the network together, along with a host of other improvements that come from moving from an analogue to digital train control system. The system will upgrade the Sydney Trains suburban network to European Train Control System (ETCS) Level 2, and the regional network to ETCS Level 1. These measures will enable more trains to run more frequently throughout the Sydney network.

“When you digitise and go to a digital signalling system you then allow yourself to be able to regulate trains, so you can speed them up or slow them down as the demand changes throughout the course of the day,” said Talbot.

The Digital Systems Program has three main elements. The first involves the replacement of trackside signalling equipment with in-cab train control technology. The second is implementing Automatic Train Operation (ATO), which enables faster and more consistent journey times. The third is a digital Traffic Management System for the entire network that can more effectively manage the network.

The ETCS technology is the digital signalling element of the project. Moving from the traditional coloured light signalling system will enable trains to move through the network at more frequent intervals. However, more frequent train services mean that each train must spend less time on the platform.

“If you get a higher throughput of trains, you then need to manage your dwell times at the stations,” said Talbot. “Particularly at the busy ones, you have to look at how to get people on and off the train quickly to shorten the time that the train is actually stationary on the platform.”

With three minutes in-between trains, dwell times will have to be reduced to less than a minute at busy points in the network. Here, the digital systems encounter the human element of rail services, said Talbot.

“There’s a number of different ways that we’ve been exploring the management of dwell time, by having additional people on the platform guiding the customers in the right places to allow people to get on and off faster, announcements, wayfinding, barriers to allow people to depart the platform easily, blocking off platforms when they get overcrowded to allow people to get off the platform. We’re experimenting with all forms to try and optimise our ability to manage dwell at busy stations.”

Another factor driving the adoption of digital systems at Sydney Trains is the impetus to make the system safer. Digitalising elements of train control, signalling, and traffic management will allow for the system to respond faster to incidents, and remove some risks of human error.

“The second key driver for the project is the ability to make the system safer,” said Talbot. “We can have a regulatory system whereby if for any reason a driver is incapacitated or cannot control the train then the train is automatically controlled. That provides a high level of safety for the driver and the passenger as it avoids a collision.”

While implementing a safe, efficient system is the priority, the adoption of digital systems is part of the wider technology-driven modernisation of the Sydney transport network and implementing a digital train control system is one step in that direction.

“Getting us to a digital railway allows us to then start to automate a lot of our previously manual functions,” said Talbot.

While Sydney Trains will not be going the way of Sydney Metro by having a fully driverless, centrally controlled system, the Digital Systems project can become an enabler for a wider variety of digital technologies.

Photography by RailGallery.com.au.

THE IMPLEMENTATION OF THE DIGITAL SYSTEMS PROGRAM
In adopting the Digital Systems strategy, Sydney Trains has taken a staged approach. With procurement now underway, the project began by consulting widely and learning from other projects around the world that have adopted digital train control systems.

Although the organisation has significant expertise in traditional signalling and train control, Sydney Trains knew that adopting a digital approach to train control would require significant outside knowledge.

“We acknowledged some time ago that we are not experts in this new digital railway and so we went and sought a great lot of expertise from railways that are already deploying or are in the process of deploying ETCS and we learnt a lot about the fact that we needed to take baby steps,” said Talbot.

This learning was applied in Sydney by undertaking a limited roll out. The first segments to have the technology rolled out will be two sections of the Illawarra line, one from Redfern to Bondi Junction, and another from Sutherland to Cronulla. The ETCS technology for each segment will be provided by a separate provider, for a particular reason, said Talbot.

“We looked at the roll out across the whole network and we wanted to try and reduce the time of that so therefore you needed more than one supplier, so if you’re looking at simplicity to gain the knowledge for implementation with two different suppliers then you need to find two discrete areas which they could try.”

There is also a commercial benefit for Sydney Trains by having two suppliers for the ETCS technology, however there will be only one supplier of the traffic management system.

“It gives you the commercial ability to ensure that you get the quality and timely delivery of project because you’ve got competition in there. We chose those two areas because we could make it discrete and we could get two suppliers in there to do the implementation of the ETCS system,” said Talbot.

By having two separate sections of the same line as test sites, the system can also simulate a staggered roll-out of the technology across the wider network.

“As we roll out you’ll always be going from a fitted area to a non-fitted area and vice-versa, so we needed that non fitted area partially because we needed to test our movement of how drivers behave between fitted and non- fitted areas without going into the middle of the city to do that,” said Talbot.

The tiered approach was also driven by the realities of ETCS implementation around the world. As the system is being adopted by multiple train systems at once, this places restrictions on what is possible at one time.

“While there might be eight companies around the world that supply and deliver these systems, they are being installed all over the world. In Europe it’s going gangbusters in installing, New Zealand, Africa, and the UK, around the world it’s being implemented and therefore you have to mindful there’s a limitation on skilled competent resources.”

PRINCIPLES OF THE PROJECT
With this local and global contexts, Sydney Trains established a number of principles to drive the Digital Systems Program. One is ‘configure, not customise’.

“Everybody has learnt that overseas and once a system becomes specific, you’re then beholden and it’s a lot more costly to change in the future as technology and knowledge changes.”

The next principle was to ensure that the benefits of the system are apparent to customers as soon as possible. Instead of waiting to do one full and comprehensive roll out, segments of the project will come online earlier, enabling benefits to be felt earlier. This principle also drove the implementation of the traffic management system.

“We feel that our existing control system is not fully adaptable as a traffic management system in managing all facets of a railway, such as crewing, PA, communications, signalling, you name it, so having a traffic management system means you can handle incidents and do decision support functions to try and get back into operations from an incident as quickly as possible,” said Talbot.

Finally, from the perspective of Sydney Trains internally, the implementation of digital systems was as much a change to the business as a change to the technology, as Talbot highlighted.

“Because your business is run on the basis of a manual task business with humans carrying out the functions, now you’re moving to a more automated function, and therefore your business needs to throw out its whole rules and start with a new set of rules to be able to manage incidents, operations and maintenance.

“Everybody that we talked to overseas said ‘Pay as much attention to your change to your business as you would do to the implementation of the technologies’. So, we came to this model where to get things to be in harmony you need to make sure you have equal focus on people, technology, and processes.”

WAYS OF WORKING
Such an understanding of the way that the Digital Systems Program would upend the nature of the Sydney Trains organisation led to Talbot coming to a realisation.

“We’re not changing the technology to suit the business; we’re changing the business to suit the technology.”

This meant that Sydney Trains went through an extensive identification and impact assessment of the Digital Systems Program on current programs, from asset maintenance to the skills and competencies of staff. During the adoption phase, which could take up to 10 years, analogue and digital systems will have to operate side by side. This means that the systems and processes that come with digital technology will have to be in sync with current processes.

The work to conduct this change within Sydney Trains has been implemented collaboratively, with Sydney Trains and its implementation partners, including systems integrator Network Rail Consulting and partner organisations Acmena, The Go-Ahead Group, and Ineco. Talbot describes the resulting project team as an “integrated team environment”.

“It’s easier to get around to talk to people and also the working groups are easier to form when we need to have discussions on various topics and on top of that our governance structure that we’ve chosen is collaborative.”

Currently, the team are working towards finalising the procurement phase with the technology suppliers for the first two segments of the roll out.

“We went through a whole range of early contractor involvement and a collaborative tendering process with the shortlisted suppliers and now we’re towards the end of that,” said Talbot. “Final negotiations and contracts will be awarded shortly and then we’ll move into what we’re calling the integrated program design period (IPDP).”

Having the project team and suppliers working together aims to minimise detailed design reworking that needs to be done.

Once the suppliers are chosen, implementation of the system with the first deployments of in-cab signalling and a network-wide traffic management system is scheduled to complete in 2023.

Digital engineering becoming more important than ever

While digital engineering has long been touted as the next technology that can create, manage, and utilise data for infrastructure development, the coronavirus (COVID-19) pandemic has brought it even more into focus.

With workforces forcibly distributed as remote working directives took effect, the value of having a rich virtual building information model (BIM) to enable seamless collaboration across physically distanced workforces has never been clearer.

Consulting company GHD has already exploited the value of digital ways of working in many projects, and recently in its work on the Forrestfield-Airport Link project – part of the Metronet project in Perth – within the Salini Impregilo and NRW Joint Venture.

According to GHD’s Rail Design Lead on the project, Martin Harle, using digital tools such as BIM, geographic information systems (GIS), analytics, coding, and automation, the team was able to eliminate clashes between different models by coordinating design through one model.

“Using this technology we are able to automate clash checks across multiple complex disciplines, highlighting design coordination issues in real time,” he said. “It helps to pre-empt and resolve potential construction problems during the design process, rather than dealing with unexpected issues as they occur on site.”

Avoiding duplication and replication, the BIM system enables costs to be reduced at the design phase. This not only improves processes at the construction site, but also enables suppliers to have a clearer idea of the concepts their assets will be working in.

“So far, on the Forrestfield-Airport Link, rail track and overhead line equipment has been designed and modelled 8.5 times faster and 1152 hours have been saved in automating 180 Navisworks exports,” said Martin.

Incorporating digital tools early on in the construction of a project can also lead to efficiencies once the project is operational. At the end of the design and construct phase, asset information can be handed over to the operator to promote ongoing efficiency.

The insights that GHD has gathered from this project have been used to advantage on other projects, including the Sydney Metro. And the lessons have wider implications through the Digital Engineering Code of Practice which will be applied nationally through the Rail Industry Safety and Standards Board (RISSB), which GHD helped design. GHD BIM lead – Western Australia and co-author of the code Belinda Thompson, said the benefits of the code are broad.

“By adopting Digital Engineering processes, increasing the accuracy of information and automating the data exchange processes, we can improve safety, reduce risk, achieve greater cost certainty and improved sustainability.”

The full Digital Engineering article can be found here: https://www.ghd.com/en/about-us/digital-engineering-in-action-driving-change-in-delivery-of-rail-projects.aspx.

Catenary for Forrestfield-Airport Link: Digital Engineering used in Safety-in-Design. Credit: GHD.

Efficient digital modelling cutting major project costs

It may be a rule of thumb that the larger a rail project is, the more its costs are expected to increase. In Sydney, the construction of the Sydney Metro CBD and Southwest is expected to increase by $3 billion, a 25 per cent increase on the initial costing of $11.5 to 12.5bn. Indeed, the Grattan Institute estimates that every 10 per cent increase in a project’s size is associated with a 6 per cent higher chance of an overrun, and that any overrun that occurs will be 3 per cent larger.

So when you are building the most expensive rail project in the world, the cost overruns could be gigantic. Already, the HS2 project in the UK is estimated to cost as much as £106bn ($208bn), however, the project delivery authority has been told to find at least £500 million in digital efficiencies.

To do so, HS2 Ltd have looked to apply digital best practice in data and modelling requirements, with the requirement to meet PAS 1192 Building Information Modelling (BIM) standards. This standard mandates a fully collaborative 3D BIM, including electronic project and asset information, documentation and data.

Implementing these requirements joint venture Skanska Costain STRABAG (SCS), which has been awarded the civil works contract for the 250km southern section between London and Birmingham. The section, and the project as a whole, will carry the fastest trains in Europe and over 30,000 passengers a day. During early contractor involvement, SCS had to formulate and achieve approval of a conceptual design scheme of 26km of railway within 14 months. To meet the client’s BIM demands, SCS needed to accommodate existing British railway systems and 6,000 utility assets, not to mention the 20km of tunnels, bridges, and five kilometres of earthworks.

Using BIM software from Bentley systems, SCS created a library of components within ProjectWise and OpenBuildings Designer to enable a distributed workforce of six companies including 550 staff across four countries.

“We have 59 nationalities, so quite diverse cultures on the team, and we like to think BIM is the common language we all speak,” said Peter Ruff, head of BIM for SCS.

The SCS team used Assetwise to connect asset information to the design model, so that operations and maintenance could be involved early. This led to an integrated BIM system which allows for real-time access to trusted information.

“We wanted to make sure that everyone, designers and contractors, can use this information,” said Ruff.

The use of Bentley systems in this early stage enabled early clash detection within the project and when interacting with the numerous outside stakeholders. This has already saved an estimated £1 million. Design review time was also reduced by having models and data in a single digital location, which saved £500,000 and the time cost of searching for information spread across multiple systems.

Using a connected digital environment also improved costing processes, an area of focus for SCS, said Ruff.

“One of our key areas that we wanted to improve was our 5D approach, where we use the BIM models to estimate and price from.”

A structured digital data environment ensured consistency and transparency for all stakeholders, enabling further accuracy. This led to a £300,000 saving in a 50 per cent reduction in design changes and 75 per cent less resources used than planned.

Moving forward from the early contractor involvement stage, the SCS team are looking to their BIM strategy underlying the information model which can be used throughout the project lifecycle.

“Using Bentley solutions has allowed us at SCS to realize our mission statement of creating a project that will be seen as the ‘Digital Blueprint of Future Infrastructure Projects’” said Ruff. “They have allowed us to create, manage, and leverage intelligent BIM models and the data housed within them on a complex project and see a significant increase in productivity, efficiencies, and collaboration between a large team and a multistage contract.”

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