Road User Behavior

California Traffic Safety Survey 2025

Ewald, Katrin
Wasserman, Lisa
2025

The 2025 Traffic Safety Public Opinion Study was conducted for the California Office of Traffic Safety (OTS) and the Safe Transportation Research and Education Center of UC Berkeley (SafeTREC). The findings of the 2025 Study are based on a sample size and eligibility criteria similar to previous years of data collection. A total of 2,319 responses were collected in April and May 2025 using an online selfadministered survey. Similar to previous years of the study, the survey panelists were provided through Marketing Services Group, a commercial sample and panel vendor.

The survey...

Speed Management Workshops Planned in California

March 23, 2021
Submitted by Lisa Peterson

Original post authored by Leah Shahum appeared March 23, 2021 on the Vision Zero Network

Communities Embrace Safe Speeds, Key to Safe System Approach

safe street design, safe speed limits and speed safety cameras

We are pleased to announce that three California communities have been...

Evaluation of Wet Weather Accident Causation Criteria

Oh, Soonmi
Ragland, David R.
Chan, Ching-Yao
2008

This report documents findings from analysis of traffic collision data from sites that display high collision rates only under wet pavement conditions. These sites were selected using Caltrans safety engineers’ field reports, Wet Table C “investigation required” locations, and a new approach called Continuous Risk Profile (CRP). The geometric features at the sites were studied via field visits and review of as-built plans. Rapid spatial changes (i.e., vertical and horizontal curve in short distance), narrower lane width, lack of median, and wider total freeway width were some of the...

New article in the ITE Journal: The Transportation Safety Pandemic

September 4, 2020
SUBMITTED BY LISA PETERSON
"The good news is we already have the vaccine for the transportation safety pandemic. We just must choose to use it."

How can we apply the critical lessons we are learning from the COVID19 pandemic to change our thinking and approach to transportation safety? In the Cover of the September issue of the ITE JournalSeptember issue of the Institute of Transportation Engineers (ITE) Journal, co-authors...

Register now for the 2023 Mobility Summit on November 3, 2023

October 25, 2023
Submitted by Lisa Peterson

Graphic with Haas Transportation & Mobility Club in black text on a yellow background

Join SafeTREC Safety Research Lead and Acting Co-Director Julia Griswold for the panel session, "Vision Zero: Closing the Loop on Safety and Equity" on Friday, November 3, 2023 at the 2023 Mobility Summit, UC Berkeley's flagship annual mobility conference sponsored by the Haas Transportation & Mobility Club...

Drivers, Pedestrians, and Cyclists in California Want Complete Streets: Comparison of Results from Roadway Design Surveys of Pedestrians, Drivers, Bicyclists, and Transit Users in Northern and Southern California

Sanders, Rebecca L.
Griffin, Ashleigh
MacLeod, Kara E.
Cooper, Jill F.
2014

This paper compares findings from two recent surveys on roadway design preferences among pedestrians, drivers, bicyclists, and public transit users along major urban corridors in the metro areas of San Francisco and Los Angeles. Sponsored by the California Department of Transportation (DOT), the research explored design preferences that could increase perceived traffic safety, walkability, bikability, and economic vitality along urban arterials. Results from intercept surveys showed that roadway users desire similar design features along the test corridors, which carry 25,000-40,000...

Explore our latest CPBST reports!

August 3, 2023
Submitted by Kristen Leckie

As the summer rolls on, our Community Pedestrian and Bicycle Safety Training Program (CPBST) continues to work with communities across the state of California to advance their pedestrian and bicycle safety goals. In 2023, the CPBST program is partnering with 7 new communities to:

review pedestrian and bicycle crash data and safety strategies;

facilitate a walking and biking assessment;

strategize with participants to define specific community pedestrian...

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...

CPBS 5/14 webinar: "When driving is not an option: Community access for nondrivers"

May 13, 2025
Submitted by Karen Nguyen Vo
People walking and biking in a crosswalk with "Center for Pedestrian and Bicyclist Safety" in dark teal on a white background below Join the conversation with CPBS about improving transportation systems for nondrivers

Join our consortium partners at the Center for Pedestrian and Bicyclist Safety (CPBS) and guest speakers on Wednesday, May 14 at 11am PST to discuss how the mobility needs of nondrivers...

Sites chosen for 2025 Complete Streets Safety Assessments program

April 21, 2025
Submitted by Karen Nguyen Vo

UC Berkeley SafeTREC and California Walks are excited to share news about the communities throughout California that we will be partnering with this year as part of our 2025 Complete Streets Safety Assessment (CSSA) program!

...