Alcohol and drug related crashes continue to contribute significantly to traffic deaths and injuries in California. This tool allows users to explore alcohol- and drug-related crash and injury trends, both statewide and in a county or city area.

How to Use

The tool is divided into three sections:

1. Three charts show statewide trends from1997 to 2024. * 2024 data is provisional and subject to change.
2. An interactive map and summary table of California by county. The map and the table update based on the variables that a user selects.
3. Statewide, Countywide, or Citywide summary charts using years of interest user selected from the second section.

Data used for this tool:

The data comes from the Statewide Integrated Traffic Records System (SWITRS) maintained by the CHP. Due to differences in variables and definitions, figures below may differ from those in the nationwide Fatality Analysis Reporting System (FARS).

When looking at combined alcohol- and drug-related data, the term DUI (Driving Under the Influence) is used for brevity, as is the term FSI for combined fatalities and serious injuries. See the bottom of the page for detailed definitions of alcohol related and drug related crashes. The Property Damage Only (PDO) crashes are not included.

1. California DUI Crash Trends, 1997-2024

2. California County Map and Summary Table

California County Map

Number of Crashes involving Alcohol and Drugs,

Summary Table

Number of Crashes involving Alcohol and Drugs by County in California

3. DUI Crash Summary Charts

(OPTIONAL) Choose a county and/or a city for county- or city-wide results:

All Crashes involving Alcohol and Drugs in California

Drivers in All Crashes involving Alcohol and Drugs in California

Victims in All Crashes involving Alcohol and Drugs in California

Definitions:

• Alcohol-involved crashes: injury crashes where the involved driver(s), PARTY_TYPE=1, had been drinking. The state of sobriety of the party (PARTY_SOBRIETY) includes "B - Had Been Drinking, Under Influence", "C - Had Been Drinking, Not Under Influence", and "D - Had Been Drinking, Impairment Unknown".
• Drug-involved crashes: injury crashes where the involved driver(s), PARTY_TYPE=1, were under drug influence. The state of the party with regard to drugs and physical condition (PARTY_DRUG_PHYSICAL) includes "E - Under Drug Influence".
• DUI crashes: injury crashes where the involved driver(s) were designated as having been drinking or under drug influence.