Motorized Vehicle Safety

7/29/2026 CPBS webinar: SafeTREC researchers Matthew Raifman and Sujin Lee present data analysis on San Francisco's speed cameras

July 24, 2026
Submitted by Karen Nguyen Vo

A speed camera installed on a traffic light pole is pointed at a road with car drivers and motorcyclists.

On Wednesday, July 29 at 11 a.m. Pacific Time, SafeTREC research lead Matthew Raifman and postdoctoral researcher ...

New SafeTREC resource: California Autonomous Vehicle Crash Dashboard

June 29, 2026
Submitted by Kayley Chan
UC Berkeley SafeTREC has launched our new California Autonomous Vehicle Crash Dashboard, which provides a public resource to explore autonomous vehicle crash data reported in California. The data provided includes crashes from July 2021 onwards, reported under the requirements of the National Highway Traffic Safety Administration’s (NHTSA) Standing General Order (...

New Release: 2022 SafeTREC Traffic Safety Fact Sheets

September 12, 2022
Submitted by Lisa Peterson
2022 SafeTREC Traffic Safety Fact Sheets feature recent data on some of California's most pressing traffic safety issues to help inform future road safety efforts

UC Berkeley SafeTREC is excited to announce the release of the 2022 series of Traffic Safety Fact Sheets, which feature traffic safety data and trends at the national and state level on a variety of road safety topics. This series also highlights the Safe System approach to road safety, which the United States Department of Transportation...

SafeTREC Traffic Safety Facts: Emergency Medical Services

September 20, 2018
SUBMITTED BY LISA PETERSON

Welcome back to the SafeTREC Traffic Safety Facts blog series! This summer, we have featured recent data on some of California's most pressing traffic safety issues. Today, we will wrap up the Series - for now! - and highlight the facts on emergency medical services.

We hope you have enjoyed exploring our traffic safety findings! Stay tuned for more posts in the series. And in case you missed any of the prior posts, check out the fact sheets on:

Alcohol-Impaired Driving...

SafeTREC Traffic Safety Facts: Seat Belt Use

September 18, 2018
SUBMITTED BY LISA PETERSON

Welcome back to the SafeTREC Traffic Safety Facts blog series! Each day this week we will feature recent data on some of California's most pressing traffic safety issues. Today, we will be highlighting the facts on seat belt use.

In case you missed them, check out the fact sheets on:

Alcohol-Impaired Driving Aging Road Users Bicycle Safety...

SafeTREC Traffic Safety Facts: Drug-Involved Driving

September 19, 2018
SUBMITTED BY LISA PETERSON

Welcome back to the SafeTREC Traffic Safety Facts blog series! Each day this week we will feature recent data on some of California's most pressing traffic safety issues. Today, we will be highlighting the facts on drug-involved driving.

In case you missed them, check out the fact sheets on:

Alcohol-Impaired Driving Aging Road Users Bicycle Safety...

California Traffic Safety Survey 2022: Speeding and Aggressive Driving Biggest Safety Concern

June 1, 2022
Submitted by Lisa Peterson

UC Berkeley SafeTREC is excited to release the 2022 California Traffic Safety Survey led by Ewald & Wasserman Research Consultants (E&W). This study was conducted on behalf of the California Office of Traffic Safety (OTS) and the Safe Transportation Research and Education Center (SafeTREC) at the University of California, Berkeley.

Speeding and Aggressive Driving Biggest Safety Concern

Speeding and aggressive driving was the biggest safety concern for California drivers (75.0% of surveyed...

2023 California Traffic Safety Study Summary

Jill F. Cooper
UC Berkeley SafeTREC
2023

2023 marked the fourteenth year of the California Office of Traffic Safety’s (OTS) Annual Traffic Safety Study. The study is intended to create a better understanding of trends in traffic safety behaviors and help focus traffic safety programs, which include enforcement efforts along with public education campaigns to ensure they are effective in targeting areas with disproportionate traffic safety injuries. The survey is sponsored by the OTS and administered by Ewald and Wasserman Research Consultants, along with University of California Berkeley Safe Transportation Research and...

California Traffic Safety Survey 2023: Speeding and aggressive driving, distracted driving, and drunk driving biggest safety concerns

July 3, 2023
Submitted by Lisa Peterson

UC Berkeley SafeTREC is excited to release the 2023 California Traffic Safety Survey led by Ewald & Wasserman Research Consultants (E&W). This study was conducted on behalf of the California Office of Traffic Safety (OTS) and the Safe Transportation Research and Education Center (SafeTREC) at the University of California, Berkeley.

Speeding and Aggressive Driving Biggest Safety Concern

According to survey responses, the...

New Release: 2021 SafeTREC Traffic Safety Fact Sheets

September 30, 2021
Submitted by Lisa Peterson
2021 SafeTREC Traffic Safety Fact Sheets feature recent data on some of California's most pressing traffic safety issues to help inform future road safety efforts

UC Berkeley SafeTREC is excited to announce the release of the 2021 series of Traffic Safety Fact Sheets, which feature traffic safety data and trends at the national and state level on a variety of road safety topics. This series also highlights the Safe System approach to road safety. Historically, road safety efforts focused on changing human behaviors to prevent crashes. The Safe System approach reframes...