San Francisco agency obtains first approval for train-control upgrade

On Aug. 6, the San Francisco Municipal Transportation Agency (SFMTA) received the first of several approvals needed to modernize its train-control system.

Through an ongoing train-control upgrade project, the agency plans to overhaul its train-control technology; install a modern communications-based train-control system in the subways and on streets where Muni trains operate; and expand train control to on-street Metro corridors.  

The project is necessary because the current automatic train-control system that’s used to control Muni Metro trains in the subway is very outdated, SFMTA officials said in a press release. The current system also is at risk of breaking down and causing an extended subway shutdown, they believe.

“Some parts of the system are no longer made, and we will no longer be able to replace them. Other parts are very limited in their capabilities,” SFMTA officials said. “While our staff are very skilled at keeping trains running, this is not sustainable.”

A new train-control system will help monitor all trains from the start and end of service; anticipate streetlights earlier to provide trains the right of way and reduce delays; make switches between tracks easier; and provide passengers with shorter and smoother rides — with fewer delays — citywide, they said.

“This way, we can help improve reliability, safety and service across the entire Metro system,” SFMTA officials said.

The agency still needs remaining approvals from its board and the San Francisco Board of Supervisors to launch the project. Work is expected to proceed in short phases from 2025 through 2032, including detailed designs, installation, testing and final delivery.