New York City Speed Limits for Vision Zero Initiative

Data compiled by the New York City Department of Transportation tracks posted speed limits on city streets. It supports the Vision Zero initiative following the city's default speed limit change from 30 mph to 25 mph in November 2014. The information is updated as soon as reasonably practicable.

Use Cases

• Analyze the distribution of posted speed limits (`postvz_sl`) across different streets (`street`) to identify high-speed corridors.
• Map speed limit data (`the_geom`) against crash or injury statistics to evaluate Vision Zero policy effectiveness.
• Validate the presence of speed limit signage (`postvz_sg`) for specific street segments using the geometric data (`Shape_Leng`).

Strengths

• Includes geometric data (`the_geom`) for spatial analysis.
• Tracks both posted speed limits (`postvz_sl`) and signage (`postvz_sg`) for validation.

Limitations

• Unknown row count and dataset size limits analytical scope.
• Temporal coverage and update frequency are not explicitly defined in the metadata.

Provenance

Source

New York City Department of Transportation.

Collection Method

Compiled for governmental purposes, specific methodology not detailed.

Time Range

Covers period after November 2014 speed limit change.

Freshness

Last updated April 2026, suggesting regular maintenance.

Geography

Streets within New York City.