UC Berkeley SafeTREC and Fehr & Peers are excited to announce the selection of 16 communities throughout California for our 2026 Complete Streets Safety Assessment (CSSA) program! These sites represent a diverse range of cities, counties, and tribal lands committed to eliminating traffic fatalities and improving mobility for all road users.
About the program
The CSSA program offers free, expert technical assistance to California communities seeking to eliminate traffic fatalities and serious injuries. Our safety evaluators use the Safe System Approach to conduct transportation safety assessments with a focus on pedestrian and bicycle safety. These assessments help communities identify and implement infrastructure improvements that protect all users on California’s roadways. Their insights are captured in comprehensive reports that include crash data, benchmarking analysis, and field assessment summaries to prioritize the safety solutions that ensure a mistake on the road doesn't cost someone their life.
In addition to our standard assessments, we offer a Safe Speed Limits Assessment (SSLA) add-on. Because we know that lower speeds save lives, this program provides technical support to communities to set speed limits appropriate for their local context. Guided by the Safe System Approach, this project builds off SafeTREC’s California Safe Speeds Toolkit, which gives local agencies the tools and speed limit setting flexibilities they need to manage speeds and protect their communities.
The 2026 CSSA
This year, the CSSA will partner with the following communities to assess, design, and advance active transportation safety improvements:
Tribal Nations
-
Bear River Band of the Rohnerville Rancheria
-
Hoopa Valley Tribe
-
Mesa Grande Band of Mission Indians
-
Tolowa Dee-ni' Nation
Cities, Counties, and Towns
-
City of Fortuna*
-
City of Fremont*
-
City of Martinez
-
City of San Rafael
-
City of Santa Cruz*
-
City of Santa Rosa
-
City of South Lake Tahoe
-
City of South San Francisco
-
County of Santa Barbara
-
County of Sonoma
-
County of Tuolumne
-
Town of Los Altos Hills*
* Includes Safe Speed Limits Assessment (SSLA) technical assistance.
Join the conversation: Advancing safety through the CSSA
SafeTREC is excited to announce a virtual two-part Peer Exchange series in spring 2026: “Advancing safety through the CSSA.” This series features two former participant communities reflecting on their experiences with the program – from their initial application to the real-world safety impacts of their comprehensive safety reports.
We welcome all former, current, and prospective CSSA participants to join us as we share success stories, troubleshoot common challenges, and learn directly from peers who are transforming California’s roads one intersection at a time.
Case study from the City of South San Francisco
Thursday, April 23, 2026 | 2:00 p.m. - 3:00 p.m. PT | Register for the peer exchange
Join John Wilson, Senior Project Engineer, from the City of South San Francisco and technical evaluator Obaid Khan for a deep dive into the lessons learned from their Safe Speed Limits Assessment and how they are moving forward with their safety recommendations.
Case study from the City of Wildomar
Wednesday, May 6, 2026 | 12:00 p.m. - 1:00 p.m. PT | Register for the peer exchange
Join Steve Libring, Senior Traffic Engineer, and Jason Farag, Public Works Director and City Engineer from the City of Wildomar and technical evaluator Tom Mericle as they discuss their experience and the strategies they’ve used to apply CSSA findings.
If you require an accommodation for effective communication (ASL interpreting/CART captioning, alternative media formats, etc.) or information about campus mobility access features in order to fully participate in this event, please contact our access coordinator SangHyouk Oum at shoum@berkeley.edu with as much advance notice as possible and at least 3-5 business days in advance of the event.
Share your success
Do you have any “wins” from your CSSA or SSLA experience? Whether it’s a new funding application, a planned infrastructure improvement, or a successful speed limit update, we want to hear about it! Please connect with us at cssa@berkeley.edu
Questions about the CSSA program?
Please contact us at cssa@berkeley.edu if you would like more information about the CSSA program or have any questions.
Funding for this program was provided by a grant from the California Office of Traffic Safety, through the National Highway Traffic Safety Administration.