PM3 Posted Speed Limit data sources

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Peter Bosa
PM3 Posted Speed Limit data sources

Just curious what Posted Speed Limit data sources other jurisdictions are using for the required FHWA PM3 performance metrics. Our state DOT once had PSLs that could be attributed to the HERE-based NPMRDS dataset. Since that dataset has moved to INRIX, we are looking for PSL data that are both

directly attributable to the INRIX dataset and offer coverage beyond just the National Highway System.

I assume that the travel time analytic data vendors have PSL data ... heck, even Google and Apple maps show Posted Speed Limit when using their navigation features! Wish this was included with NPMRDS ... but that's a different post!

Cheers-

Peter Bosa, Oregon Metro

Peter Bosa

Appreciate the response, Sam. I’m looking for a dataset that is directly attributable to TMCs, especially with the updated TMCs in the NPMRDS. Ideally, there is a dataset that contains Posted Speed Limits for all major facilities with a TMC designation, including non-state owned facilities.