San Francisco Traffic Calming - Speed Bumps and Roundabouts
San Francisco, California enacts traffic calming projects—like speed bumps and roundabouts—through city engineering programs, permits, and community review. This guide explains how those measures are proposed, reviewed, permitted, enforced, and appealed under San Francisco practice, and points to the official departments, forms, and contacts to start or contest a change to a street.
How traffic calming is decided
The San Francisco Municipal Transportation Agency (SFMTA) coordinates neighborhood traffic calming proposals and engineering evaluations; Public Works issues permits for physical modifications to the roadway. Community petitions, collision data, and technical studies drive decisions; formal requests begin with SFMTA project pages or 311 submissions SFMTA Traffic Calming program[1] and with encroachment-permit review by San Francisco Public Works City encroachment permits[2]. The city code that governs alterations to public streets and traffic control devices is published in the municipal code repository San Francisco municipal code library[3].
Design standards and types of measures
- Speed bumps and cushions: used on local streets to reduce speeds.
- Roundabouts and mini-roundabouts: used at intersections to slow turning movements and reduce conflict points.
- Lane narrowing, curb extensions, and raised crosswalks: complementary measures that often accompany roundabouts or speed cushions.
Penalties & Enforcement
Enforcement for unlawful installation, alteration, or obstruction of public traffic control devices is handled by the department with jurisdiction over the street improvements (typically San Francisco Public Works for permits and SFMTA for traffic control devices). Specific monetary fines, escalation, and non-monetary sanctions depend on the controlling code or permit condition; when a numeric penalty or schedule is not explicitly published on an official project or permit page, this guide notes that it is not specified on the cited page.
- Monetary fines: not specified on the cited page for general traffic-calming installations; enforcement pages refer to permit violation processes rather than a single fine schedule.
- Escalation: first/repeat/continuing offence amounts are not specified on the cited pages and vary with the cited code or permit condition.
- Non-monetary sanctions: stop-work orders, removal orders, permit revocation, and civil actions are used where work lacks authorization.
- Enforcer and inspection: San Francisco Public Works inspects encroachment and construction permits; SFMTA inspects traffic-control devices and operational impacts.
- Complaint pathways: submit an enforcement or permit complaint via Public Works permit contacts or SFMTA project contacts listed on official pages Public Works permits[2].
- Appeal and review: appeal routes depend on the permit or code citation; specific time limits for appeals are not specified on the cited permit pages and must be confirmed on the permit decision or municipal code section cited with the permit.
- Defences and discretion: permits, variances, or temporary exemptions may be available; agencies exercise engineering discretion when public safety is demonstrated.
Applications & Forms
SFMTA publishes traffic-calming project guidance and directs neighborhood requests through its project pages or 311; Public Works handles encroachment and construction permits for physical installations. Specific form names and fees are shown on those official pages; where a precise form number or fee is not published on the program page, it is not specified on the cited page.
- SFMTA traffic-calming requests: submit neighborhood requests via the SFMTA project page or 311; fees are not specified on the SFMTA project landing page SFMTA Traffic Calming program[1].
- Public Works encroachment permit: application required for physical changes to the roadway; fee schedules and submittal instructions are on the Public Works permit page City encroachment permits[2].
Common violations and typical outcomes
- Unauthorized installation of physical devices on a public street — outcome: removal order and permit sanctions.
- Failure to obtain encroachment permit before work — outcome: stop-work order, civil penalties or restoration requirements.
- Interfering with official traffic-control devices — outcome: administrative enforcement and possible citation.
FAQ
- Who decides whether a speed bump or roundabout is installed?
- The SFMTA evaluates safety and traffic data and coordinates community outreach; Public Works issues permits for physical construction.
- Can a resident request a traffic calming study?
- Yes. Residents should submit a request via the SFMTA traffic-calming project page or through 311; the agency will evaluate eligibility and data.
- What if someone installs a speed bump without a permit?
- Unauthorized installations are subject to removal orders and permit enforcement by Public Works; monetary fines or restoration conditions are applied per permit rules (specific fine amounts are not specified on the cited pages).
How-To
- Gather street data: record collision history, speeds, and community support.
- Submit a request to SFMTA via the traffic calming project page or 311 and attach supporting evidence.
- Work with SFMTA on engineering evaluation and community outreach; respond to requests for information.
- If approved, obtain Public Works encroachment permits and schedule construction with approved contractors.
Key Takeaways
- Begin with SFMTA or 311—don’t attempt unpermitted street changes.
- Permits from Public Works are required for physical installation on the street.
Help and Support / Resources
- SFMTA contact and project pages
- San Francisco Public Works main site
- San Francisco 311 (service requests)