Cityflo 650 CBTC

"CITYFLO" 650 signalling is a CBTC system designed by Bombardier Transportation. It makes use of bi-directional radio communication between trains and wayside equipment, as well as true moving block technology, to control train operation. Trains report their position via radio, and a wayside signalling system provides movement authorities to the trains via a radio link.
Transit lines using the system.
Transit lines using the Cityflo 650 system as of February 26, 2014 include the following:
In revenue service.
Under construction:
Test tracks: