Shared Lane Markings Installed in San Francisco

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Frequently Asked Questions (FAQ) about the Shared Roadway Marking

At their August 2004 meeting, the California Traffic Control Device Committee(CTCDC) recommended that Caltrans adopt the "bike + chevron" shared roadway marking for inclusion in the MUTCD 2003 California Supplement . This decision was based on a report prepared by Alta Planning + Design for the San Francisco Department of Parking and Traffic's Bicycle Program which presents the findings of a study evaluating the effectiveness of two pavement markings for use on Class III (signed/shared) bikeways. On September 13, 2005, Caltrans adopted Traffic Operations Directive Policy 05-10 which incorporates the Shared Roadway Marking into the 2003 MUTCD CA Supplement

New! SF Concerns with Approved Language: While San Francisco is pleased to see the Shared Roadway Marking approved as an official traffic control device for the state of California, some changes were made to the language controlling the use of the marking that we believe should be revisited. The letter to the California Traffic Control Device Committee and Caltrans (pdf) outlines our concerns with language that limits the use of the marking to where there is parallel parking.

Report: "San Francisco's Shared Roadway Pavement Markings: Improving Bicycle Safety" (.pdf)

To View Figure of Marking and CA Guidance for Installation:Traffic Operations Directive Policy 05-10

Marking in the News: Christian Science Monitor

Questions or comments on the report may be directed to Mia Birk of Alta Planning + Design at MiaBirk@altaplanning.com 503.230.9862.

Questions about San Francisco's experience with shared roadway pavement markings and the CTCDC approval process may be directed to Mike Sallabery of the MTA at mike.sallaberry@sfmta.com or 415 701-4563.

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