Phase 1: Initial Technology Demonstration:

We will install the new Communications-Based Train Control at street level along the Embarcadero and Third Street corridors to test and validate the new system. If any troubleshooting is needed, trains can easily switch into manual mode and operate as they are now with negligible impacts to service.

Phase 2: Subway Technology Upgrade:

We will install and activate the new Communications-Based Train Control in the subway alongside the existing Automatic Train Control System. This will allow us to ensure the new Communications-Based Train Control works well in the subway and keep the Automatic Train Control System in place in case temporarily as a redundant system.

Phases 3-7: On-Street Technology Installation:

We will roll out the Communications-Based Train Control to all remaining surface branching of the Muni Metro system, line by line.