San Francisco Street Segment Speed Limits with Implementation Details

San Francisco's maximum speed limits per street segment, sourced from city legislation and engineering directives. The dataset primarily indicates speeds greater than 25 MPH, with 25 MPH as the de facto limit for most residential and commercial streets. It is updated quarterly or as needed by the City of San Francisco.

Use Cases

• Modeling traffic flow and congestion based on posted speed limits per street segment.
• Assessing regulatory compliance for speed limit signage based on implementation work orders.
• Planning traffic safety interventions based on streets with speeds greater than 25 MPH.
• Analyzing urban transportation policy based on legislation and engineering directives.

Strengths

• Includes implementation details such as sign installation work orders.
• Updated quarterly or on an as-needed basis.
• Data is sourced from official city legislation and engineering directives.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

City of San Francisco

Collection Method

Speed limit legislation from MTAB and engineering directives; implementation information from SSD Shops Reports parsed via Python.

Freshness

Updated quarterly or as needed; last metadata update was 2026-03-22.

Geography

City of San Francisco