These charts illustrate the average number of alcohol-involved collisions in the state of California each year, from 2013-2015, as well as the number of people who were injured and killed in those collisions.
We also show the number of collisions, and those injured and killed during the current times alcohol cannot be sold or served in California or, from 2am to 6am.
California legislators are considering Senate Bill #58, also known as the 4am Bar Bill, which will allow some cities to extend hours of alcohol service from 2am to 4am – giving potential drunk and impaired drivers two more hours to drink into early-morning hours.
For illustration purposes, we indicate how such a two-hour shift of the average of collisions, injuries, and deaths could reflect on morning rush hour traffic. No one can say for certain how many DUI drivers will emerge earlier into the morning as a result of the 4 am bill but, we can be sure that there will be an increase of drunk drivers – and the resulting collisions, injuries, and deaths – into the early morning hours.
The data used is from the California Highway Patrol (CHP) Statewide Integrated Traffic Records System (SWITRS) and reflects the average numbers from the years 2013-2015. All data used is provided in the tables linked below.
Table 1: Number of Injury and Fatal Collisions by Time of Day
Table 2: Number Injured and Killed by Month
Table 3: Summary Number of Collisions for Charts
Analysis 1: Collisions, Injuries, and Fatalities Analysis
Source: California Highway Patrol (CHP) Statewide Integrated Traffic Records System (SWITRS)
Also See: To view data for your specific California county a toolkit is provided at Berkeley Transportation Injury Mapping System (TIMS).