Inspection of retrofitting of existing light rail vehicles to the new Automatic Train Protection (ATP) signaling system
Automatic Train Protection system is a control system used by railroads to help avoid collisions by automatically controlling the maximum allowable speed (MAS) that a train can travel at in at any given time relative to its movement authority. The MAS can vary from 0 MPH to the track's MAS, and is determined by variable factors such as presence of maintenance crews on Right Of Way (ROW), train headways and the relative distance between the train and home signals. Constant communications between train on-board computer, wayside instrumentation and the control center help determine MAS.
GL's engineers defined and inspected the ATP logic for a passenger railroad system's operational and simulator software. The operational software is used by the train supervisors in the control center to manage the train. The simulator is used to train railroad supervisors on the operation of the railroad. Our engineers also inspected retrofitting of existing light rail vehicles to a new Automatic Train Protection (ATP) signaling system of a large transit system.