Green Line Train Protection System
The Green Line Train Protection System (GLTPS) combines vehicle and wayside equipment to avoid train-on-train collisions, provide stop signal overrun protection, and incorporate speed enforcement.
Building a Better T
As part of our $9.6 billion, 5-year capital investment plan, we're renovating stations, modernizing fare collection systems, upgrading services for our buses, subways, and ferries, and improving the accessibility of the entire system.
What We're Working On
We're performing site and vehicle fleet surveys to assess existing equipment and develop preliminary design and installation plans. The project will then happen in two phases:
- Phase 1: Deployment of a warning system that will provide audible and visual alarms notifying the operator of an impending collision or speed violation.
- Phase 2: Deployment of an automatic train protection functionality that features real-time train location and speed enforcement. This will prevent overruns (when stop signals are run through), train-to-train collisions, speeding in permanent or temporary slow zones, and will protect workers in the right of way (ROW).
Benefits and How it Works
The GLTPS system will use safety monitoring equipment to transmit data to the train as it moves along the tracks. Using onboard alerts and communications, the system will notify the operator when another vehicle is detected, when the vehicle is speeding, and can automatically stop the train at stop signals.
Rider Benefits
- Safety: Reduced risk of train-to-train collision
- Capacity: Improved travel times from fewer unplanned stops