A performance-based track geometry system incorporating trained neural networks has been developed by TTCI. It is already being used by four railways and is now being tested on the Dallas light rail network, as senior engineer Charity Duran Ketchum explains.
Controlling wheel-rail interaction and improving maintenance can prevent flange climb derailments improving the safety of urban transport systems, explain Huimin Wu, principal investigator and Nicholas Wilson, scientist at TTCI, United States.
The deadline for the network-wide deployment of Positive Train Control (PTC) in the United States is now less than four years away. Kevin Smith examines the current status of this mammoth project, the challenges it poses to US railways, and how they might yet make it work in their favour.