200307 – Costa & Ursich – WestNet Rail Processor Based Interlocking Project – Western Australia

The Processor Based Interlocking “PBI” Project commenced in October 1999 and included the control of 40 stations extending from Coolup 40 km south of Perth through to Koolyanobbing East, which is 400 km east of Perth in the rail network. Figure 1 shows the extent of the WestNet Rail mainline routes. The project has successfully delivered a new Train Control System, PBI’s and a variety of interface designs to new and existing equipment.

This paper discusses some of the engineering challenges, achievements, safety benefits and future opportunities such a project brings to the railway operation.