(Source: Chicago Tribune, January 5, 2018)
CHICAGO — In its lab, Metra has recreated a microcosm of the entire PTC communications system, including trackside communications, back office systems, onboard computers, communications and software. It allows Metra to test the system’s responsiveness and accuracy before it goes live. It will also be used for testing as more innovations are introduced through these years. Beyond the lab, PTC must be tested on real trains, on each line.
Full story: Chicago Tribune