Data collection

California Traffic Safety Survey 2026

Ewald, Katrin
Wasserman, Lisa
2026

The Traffic Safety Public Opinion Study is conducted annually for the California Office of Traffic Safety (OTS) and the Safe Transportation Research and Education Center at UC Berkeley (SafeTREC). Eligible participants were California drivers aged 18 years and older. As in previous years, predetermined quotas were established by age and gender; however, the 2026 study used more detailed age categories aligned with U.S. Census data. For the 2026 version of the Traffic Safety Public Opinion Study, a substantially larger cross-section of 10,014 drivers were surveyed between June and July 2026...

California Traffic Safety Survey 2026 Overview of results and key findings

Weijing Wang
Matthew Raifman
2026

The California Traffic Safety Survey is an annual survey overseen by the University of California Berkeley Safe Transportation Research and Education Center (SafeTREC) and sponsored by the California Office of Traffic Safety (OTS). This statewide survey, initiated in 2010, collects data on public safety perceptions, driver behavior, and awareness of traffic safety campaigns. While administered in person through 2019, the survey transitioned to a self-administered online panel in 2020. The online survey takes approximately five to ten minutes to complete. Eligible participants must be...

New research report: "Trust in the wild: Multi-modal safety perceptions in naturalistic AV deployment"

August 24, 2026
Submitted by Karen Nguyen Vo

A Waymo robotaxi drives on the street in San Francisco.

How much do people trust automated vehicles (AVs), and do trust levels change with the amount of exposure one has to them?

A new UC Berkeley SafeTREC study surveyed 811 San Francisco residents who have had real-world exposure to AVs — 376 robotaxi passengers and 435 non-passengers who are pedestrians, bicyclists, or drivers...

https://www.sciencedirect.com/science/article/pii/S1369847826002330?via%3Dihub

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 (...

Street Story: A platform for community engagement

Street Story

Street Story is a community engagement platform provided by UC Berkeley SafeTREC in English and Spanish that allows residents, community groups, and agencies to collect information about transportation crashes, near misses, general hazards, and safe locations to travel. The tool is free to use, anonymous, and publicly accessible. Street Story is not a...

New release: California Active Transportation Data Portal for pedestrian, bicyclist, micromobility count data

September 30, 2025
Submitted by Karen Nguyen Vo

Home page of the CAT Data Portal

UC Berkeley SafeTREC has launched the California Active Transportation Data Portal (CAT Data Portal), a platform to collect, store, and visualize bicyclist, pedestrian, wheelchair, and other...

SafeTREC's Liza Lutzker to present at 2025 SER Annual Meeting

May 29, 2025
Submitted by Lisa Peterson

UC Berkeley SafeTREC research data analyst Liza Lutzker will be presenting "Trends and disparities in pedestrian injuries and fatalities in hit-and-run crashes" in a poster session at the 2025 Society for Epidemiologic Research (SER) Annual Meeting on June 11th, 2025 in Boston, Massachusetts. This presentation draws from a current research project for the Center for Pedestrian and Bicyclist Safety (CPBS) that is examining recent trends and risk factors in pedestrian fatalities and injuries in hit-and-run...

Impact of the Community Pedestrian and Bicycle Safety Training: Program Insights from the 2023 Follow-Up Survey

Lekshmy Hirandas
2023

The Community Pedestrian and Bicycle Safety Training Program (CPBST) is a collaborative effort between the Safe Transportation Research and Education Center (SafeTREC) at the University of California Berkeley and California Walks (Cal Walks), established in 2009, with funding from the California Office of Traffic Safety. Its main objective is to promote pedestrian and bicycle safety by educating...

Custom Boundary Instructions for Street Story now available in Spanish!

September 30, 2022
Submitted by Jarah Crowner

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