Crash Causation & Contributing Factors

Work on what preceded a crash: the events, driver and roadway factors, and crash types identified in crash and near-crash data.

What's here. Naturalistic crash near crash event data from instrumented-vehicle studies, pre crash contributing factors coded from crash and event records, causation analyses that assign or model causal roles, crash typology and configuration schemes, and in depth crash investigation case series.

What isn't here.

• crash typologies defined for pedestrians, cyclists, and micromobility riders — Vulnerable Road Users. General crash typology sits here, but road-user-specific classification schemes are shelved with the road user: pedestrian and cyclist configurations under vru_crash_typology in vulnerable_road_users, and motorcycle_crash_typology in two_wheeler_motorcycle.
• crash counts, rates, trends, and exposure denominators — Crash Statistics & Epidemiology. This category asks what led to a crash, not how many or how often. Incidence, fatality and injury trends, exposure measurement, and demographic disparities are in crash_statistics_epidemiology.
• crash reconstruction and perception-reaction time analysis for litigation — Forensic Human Factors. Reconstruction applied to individual cases, expert witness methodology, and visibility or conspicuity analysis prepared for court are in forensic_human_factors, the sibling category in this area.