[From Jessica Roberts on the TDM listserv]

NACTO released a new guide on how to set speed limits in urban areas. The TL;DR version is:

City Limits outlines a three-method approach to speed limit setting that provides an alternative to percentile-based speed limit setting:

  1. Setting default speed limits on many streets at once (such as 25 mph on all major streets and 20 mph on all minor streets),
  2. Designating slow zones in sensitive areas, and
  3. Setting corridor speed limits on high priority major streets, using a safe speed study, which uses conflict density and activity level to set context-appropriate speed limits.


Beth McKechnie (she/her) | Green Action Centre

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