<p>The Australian Rail Track Corporation (ARTC) has recorded its highest monthly volume of freight tonnage over the networks it controls.</p> <p>A total of 2.8bn gross tonne km (GTK) were moved across the track network, an increase of 8.9% over March 2003.</p> <p>ARTC said the bulk of the upsurge in traffic was the result of increased domestic interstate freight volumes.</p> <p>The corporation’s managing director, David Marchant, said: "As well as the recovery from the effects of the 2002 drought, we are also seeing a strong increase in interstate traffic and also contributions from new customers such as the regional intermodal terminal at Bowmans in South Australia." </p> <br />