Data field · Event · Person

Driver impairment type

The reported drug, physical, fatigue or unknown impairment condition of a driver or party.

Who carries it ↓

1Data sources

1Providers

1Free to access

Sources that carry it

1 source

UC Berkeley Safe Transportation Resea…

TIMS SWITRS Query and Download

Free standing account-based query and download channel for CHP-maintained California SWITRS Crash, Party, and Victim data. TIMS supplies the last ten years of final data plus recent provisional data, geocoded coordinates, release-status distinctions, and a complete field codebook. Use is subject to TIMS attribution, disclaimer, litigation-use, and 23 U.S.C. §409 terms; traffic-crash report documents are not included.

Free Full file Subnational 51 fields

Questions it helps answer

Traffic crash roadway and environmental conditions Traffic crash occurrence and sequence

Need Driver impairment type at scale?

We compare every source that carries it on your own records — fill rate, freshness, definition — and bring the winner into production for you.