California State Highway Crash and Travel Metrics 2022

California's 2022 Crash Data on State Highway System provides annual summaries of vehicle travel, road miles, and crash rates. The report, produced by the California Department of Transportation (Caltrans), includes metrics like Million Vehicle Miles (MVM) and fatality rates per 100 MVM. It covers the entire California State Highway System.

Use Cases

• Analyze fatality rates per 100 MVM across different lane types to identify high-risk road segments.
• Compare total crash and fatal + injury crash rates per MVM between various population codes.
• Model the relationship between Million Vehicle Miles (MVM) of travel and crash rates on the state highway network.
• Assess fatality rate trends by calculating rates per 100 MVM for different years or geographic areas.

Strengths

• Data is produced annually by the authoritative California Department of Transportation (Caltrans).
• Report provides specific, calculated metrics like crash rates per MVM and fatality rates per 100 MVM.
• Covers the entire California State Highway System, offering a statewide perspective.

Limitations

• The specific number of data rows and columns is unknown, limiting assessment of granularity.
• Data is aggregated to annual, statewide summaries, preventing analysis of individual crash events.
• The dataset may be limited to 2022, lacking a multi-year time series for trend analysis.

Provenance

Source

California Department of Transportation (Caltrans).

Collection Method

Annually produced report compiling statewide summaries from transportation system data.

Time Range

2022

Freshness

Last updated in November 2024, containing data for the 2022 reporting year.

Geography

California State Highway System, USA.