Roadway lane count
The number of travel lanes on the roadway at an event location.
Sources that carry it
3 sourcesAnnual 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.
Annual final national files for every qualifying U.S. fatal motor-vehicle traffic crash, with coordinated crash, vehicle, person, ordered event, circumstance, decoded-vehicle, imputation, and auxiliary tables. Inventory is pinned to 2024 Final and does not claim nonfatal or preliminary coverage.
Daily crash-grain E-Crash public data for CPD-jurisdiction crashes on Chicago streets. Coverage begins partially in 2015 and is citywide only from September 2017; finalized and amended reports update rows. Officer-recorded conditions are not independently inferred weather.
Questions it helps answer
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