Data collection

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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New Publication - Highway Crashes in California During the COVID-19 Pandemic: Insights and Considerations

August 8, 2022
Submitted by Lisa Peterson
New publication provides insights on the impact of COVID-19 pandemic on road safety in California

SafeTREC Co-Director Offer Grembek, former Postdoctoral Researcher Praveen Vayalamkuzhi, and Applications Program Manager SangHyouk Oum have co-authored a book chapter, "Highway Crashes in California During the COVID-19 Pandemic: Insights and Considerations" as part of the new publication "Pandemic in the Metropolis:...

Injury Crashes in California During COVID-19: Observations & Questions

June 4, 2020
Submitted by Offer Grembek
Preliminary observations and important questions about traffic safety during COVID-19 based on provisional weekly police-reported injury crashes on state highways in California How to study traffic safety in a rapidly changing environment?

The COVID-19 pandemic has had an abrupt impact on many aspects of our lives, including mobility. This has a direct impact on exposure (i.e., the level of activity on the roads), but can also trigger other responses that can affect road user behavior. Due to the rapid rate of change there is a need to monitor things...

NEW! SWITRS Statewide Summary Tool on TIMS

September 20, 2021
Submitted by Lisa Peterson

UC Berkeley SafeTREC’s Transportation Injury Mapping System (TIMS) has been developed to provide quick, easy and free access to California crash data from the Statewide Integrated Traffic Records System (SWITRS) that has been geo-coded to make it easy for users to query, map, and download collision data.

As part of an ongoing effort to support local and state agencies efforts to improve traffic safety, a new tool is now...

SafeTREC's SangHyouk Oum presents on SWITRS & TIMS Tools for Crash Data in California

October 5, 2021
Submitted by Lisa Peterson

On Thursday, September 23, 2021, SafeTREC Applications Program Manager SangHyouk Oum presented, "SWITRS and TIMS Tools for Crash Data in California" via Zoom for the Injury Prevention Coalition in the County of San Luis Obispo. Event information in white and light blue text on a background of different shades of blue with and a photo of speaker SangHyouk Oum

Oum discussed how crash data...

2025 Follow-up survey highlights the impact of the Community Pedestrian and Bicycle Safety Training

August 6, 2025
Submitted by Kris Leckie
Preliminary Statewide Integrated Traffic Records System (SWITRS) data for 2024 indicates that traffic crashes caused 3,376 preventable deaths statewide, of which 950 were pedestrians and 148 bicyclists. Additionally, in 2024, there were 16,142 people seriously injured in traffic crashes in California, including 2,531 pedestrians and 1,255 bicyclists. These deaths are unacceptable and preventable. Ensuring that our communities are safe for walking, biking and rolling is critical...