Clay Street Red Transit-Only Lanes

Project Overview

Muni Forward brings together in one place the long list of projects and planning efforts underway to achieve our vision of creating a safer, more reliable, and more frequent transit system. As part of this effort, the SFMTA has been installing “red carpet” on the existing transit-only lanes throughout the City, including 3rd Street, Market Street and Geary & O’Farrell Streets.

In Phase I of this project, SFMTA painted red the existing transit-only lanes on Clay Street between Sansome Street and Front Street. In Phase II of this project, SFMTA is proposing to extend the transit-only lane one block to the east to Montgomery Street.

Red transit-only lanes are more visible to motorists to ensure the lanes are kept clear for Muni buses and taxis. This project is designed to improve the safety, reliability, and efficiency of transit service on the 1 California and the 41 Union.

Upcoming meetings

No upcoming meetings have been posted

Latest updates

No updates have been posted for this project

Project Details

The Clay Street Transit-Only Lanes project will be implemented in two phases. The first phase was the immediate installation of the red paint on the existing 24-hour transit-only lanes. The second phase is the recommended conversion of the existing part-time transit only lane on Clay Street between Montgomery Street and Sansome Street to a 24-hour transit-only lane. 

Project Map

Clay St Project Map

Project Phases and Schedule

              Phase I Phase II
Nature of Work
Paint the existing transit-only lanes on Clay St between Sansome St and Front St
Legislation of the existing part-time transit lane between Montgomery St and Sansome St to 24-hour transit-only lane, and paint the lane red.
Location of Work 
Clay St between Front St and Sansome St
Clay St between Montgomery St and Sansome St
Timeline of Work



Public Hearing - tentative date is March 6, 2015
MTA Board Meeting  - tentative date is April 7, 2015
Planned Construction - April 2015
Exact Installation dates to be finalized based on community input and legislative outcomes

Benefits of Red Transit Lanes

Transit-only lanes allow transit vehicles to bypass traffic congestion and avoid conflicts with other vehicles. When private vehicles drive or park in transit-only lanes they contribute to longer transit travel times and reduced transit service reliability. Similar to green bicycle lanes, red transit-only lanes provide a strong visual reminder to road users to avoid using transit-only lanes.

Red lames on Clay

What Are the Lanes Made Out of?  

While they may look like they are painted on, the red lanes being installed on Clay Street are actually made out of a material called thermoplastic. This is the same material used for other roadway markings including lane lines and crosswalks.  

Installing red lanes image

For any questions or concerns, please contact:

Rachel Hyden
Muni Forward Public Information Officer


PDF Clay Street Red Lanes Project Flyer416.13 KB