Pedestrian Safety

Weighing Integration by Block Heterogeneity to Evaluate Pedestrian Activity

Do, Minh-Tan
Grembek, Offer
Ragland, David R.
Chan, Ching-Yao
2012

Pedestrian exposure is a necessary component for a meaningful evaluation of pedestrian safety. The Space Syntax approach has a track record of accurate prediction of pedestrian activity by estimating the physical street connectivity in urban environments. However, for some environments, the performance of Space Syntax is limited and cannot be used as a reliable estimate of exposure. This paper makes use of the interdependency between: (i) street connectivity-estimated here using integration; and (ii) land-use characteristics; to propose a mechanism to adjust integration by land-use...

Strategies for Reducing Pedestrian and Bicyclist Injury at the Corridor Level

Grembek, Offer
Zhang, Yuanyuan
Yavari, Afsaneh
Yang, Zhao
Ragland, David R.
2013

A systemic approach for identifying potential safety countermeasures and implementing them across groups of locations sharing the same risk characteristics has been developed for pedestrian-vehicle collisions. This study was funded by the California Department of Transportation (Caltrans) to develop methods for identifying sites where there is potential for significant reductions in pedestrian and bicyclist injury. Data collected between 1998 and 2007 from a 16.5-mile section of San Pablo Avenue (SR 123) in the San Francisco East Bay was used as the study area. A database containing all...

Estimation of Pedestrian Risk Exposure in Urban Areas : Case studies in the US and in France

Do, Minh-Tan
Grembek, Offer
Cerezo, Veronique
2013
The paper deals with the estimation of pedestrian risk exposure in urban areas. The approach proposed is based, on the one hand, on a spatial analysis technique called Space Syntax that characterizes the street integration - how streets are connected to each other - which gives rise to a natural movement of persons, and on the other hand, on land-use which acts as a multiplier or a divider of the original flows. Street integration is weighted by factors related to land use to better captures the heterogeneity of street-blocks. The method is applied to two radically different urban spaces: the...

Research Synthesis for the California Zero Traffic Fatalities Task Force

Grembek, Offer
Chen, Katherine L.
2020

This research synthesis consists of a set of white papers that jointly provide a review of research on the current practicefor setting speed limits and future opportunities to improve roadway safety. This synthesis was developed to inform thework of the Zero Traffic Fatalities Task Force, which was formed in 2019 by the California State Transportation Agencyin response to California Assembly Bill 2363 (Friedman). The statutory goal of the Task Force is to develop a structured,coordinated process for early engagement of all parties to develop policies to reduce traffic fatalities to...

The 2026 CPBSP: Partnering with 11 communities throughout California for safer walking, biking, and rolling

February 18, 2026
UC Berkeley SafeTREC and California Walks are excited to share the California communities we will partner with this year as part of our 2026 Community Pedestrian and Bicycle Safety Program (CPBSP)!

A group of twelve people wearing fluorescent safety vests stand together to discuss roadway conditions and concerns.

About the programs...

Deadline extended! Apply now for a Complete Streets Safety Assessment by January 30th

January 22, 2026
Apply by January 30th to improve pedestrian and bicyclist safety in your community!

Students in crosswalk in front of Branham High School

Deadline extended! Apply now for the UC Berkeley Safe Transportation Research and Education Center (SafeTREC)...

Center for Pedestrian and Bicyclist Safety announces Year 3 research projects

December 18, 2025
People walking and biking in a crosswalk with "Center for Pedestrian and Bicyclist Safety" in dark teal on a white background below

The Center for Pedestrian and Bicyclist Safety (CPBS) recently launched their Year 3 research program featuring road safety projects on topics such as roadway design, safety analytics, policy evaluation, and emerging technologies. As part of the CPBS, UC Berkeley SafeTREC...

UC Berkeley SafeTREC releases factsheet on public perception of autonomous vehicle safety in San Francisco

December 18, 2025
Infographic detailing for a pedestrian and cyclist, a Lidar sensor with a car and a passenger in a car.

Image credit: Amalia Stahl

The safety performance of autonomous vehicles (AVs) is fundamental to protecting all road users, but public perception of their safety is equally important, as it shapes trust, acceptance, and willingness to share the road with this...