Data field · Vehicle

Wheelbase type

The observed, reported, or decoded wheelbase type for the applicable subject, with source-specific role, unit, coding, and observation context retained in schema inventory.

Who carries it ↓

1Data sources

1Providers

1Free to access

Sources that carry it

1 source

National Highway Traffic Safety Admin…

NHTSA Crash Report Sampling System (CRSS) National Files

Annual public-use national probability-sample files for eligible police-reported motor-vehicle traffic crashes. Coordinated crash, vehicle, person, event-sequence, related-factor, weather, vPIC-derived, and auxiliary tables are pinned to the 2024 first final release dated 2026-04-01. CRSS is not a census or arbitrary-event lookup; estimates require its survey-design fields.

Free Full file National US 202 fields

Questions it helps answer

Traffic crash occurrence and sequence Traffic crash roadway and environmental conditions

Need Wheelbase 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.