Road User Behavior

New Release: 2022 SafeTREC Traffic Safety Fact Sheets

September 12, 2022
Submitted by Lisa Peterson
2022 SafeTREC Traffic Safety Fact Sheets feature recent data on some of California's most pressing traffic safety issues to help inform future road safety efforts

UC Berkeley SafeTREC is excited to announce the release of the 2022 series of Traffic Safety Fact Sheets, which feature traffic safety data and trends at the national and state level on a variety of road safety topics. This series also highlights the Safe System approach to road safety, which the United States Department of Transportation...

SafeTREC Traffic Safety Facts: Drug-Involved Driving

September 19, 2018
SUBMITTED BY LISA PETERSON

Welcome back to the SafeTREC Traffic Safety Facts blog series! Each day this week we will feature recent data on some of California's most pressing traffic safety issues. Today, we will be highlighting the facts on drug-involved driving.

In case you missed them, check out the fact sheets on:

Alcohol-Impaired Driving Aging Road Users Bicycle Safety...

SafeTREC Traffic Safety Facts: Speeding-Related Collisions

September 17, 2018
SUBMITTED BY LISA PETERSON

Welcome back to the SafeTREC Traffic Safety Facts blog series! Each day this week we will feature recent data on some of California's most pressing traffic safety issues. Today, we will be highlighting the facts on speeding-related collisions.

In case you missed them, check out the fact sheets on:

Alcohol-Impaired Driving Aging Road Users Bicycle Safety...

SafeTREC Traffic Safety Facts: Emergency Medical Services

September 20, 2018
SUBMITTED BY LISA PETERSON

Welcome back to the SafeTREC Traffic Safety Facts blog series! This summer, we have featured recent data on some of California's most pressing traffic safety issues. Today, we will wrap up the Series - for now! - and highlight the facts on emergency medical services.

We hope you have enjoyed exploring our traffic safety findings! Stay tuned for more posts in the series. And in case you missed any of the prior posts, check out the fact sheets on:

Alcohol-Impaired Driving...

SafeTREC Traffic Safety Facts: Seat Belt Use

September 18, 2018
SUBMITTED BY LISA PETERSON

Welcome back to the SafeTREC Traffic Safety Facts blog series! Each day this week we will feature recent data on some of California's most pressing traffic safety issues. Today, we will be highlighting the facts on seat belt use.

In case you missed them, check out the fact sheets on:

Alcohol-Impaired Driving Aging Road Users Bicycle Safety...

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...

The Goal of Road Safety in the Safe Systems Context

Fortin, Garrett
McMillan, Tracy
Grembek, Offer
Cooper, Jill F.
2018

Safe Systems is an approach to road safety that envisions the elimination of fatal and serious injuries and seeks to provide both a theoretical framework and practical roadmap for accomplishing such an ambitious goal. The Safe Systems approach involves a paradigm shift from traditional approaches to road safety planning and responsibility. This fact sheet provides an overview of the Safe Systems Approach and how it relates to both current road safety practice and initiatives such as Vision Zero. Read the full SafeTREC...

Motor vehicle speed as a risk factor in pedestrian safety

McMillan, Tracy
Cooper, Jill F.
2019

Speed is a significant risk factor in road safety. Several recent reports from the National Transportation Safety Board (NTSB) and the Governors Highway Safety Administration (GHSA) highlight the need for a greater focus on speed management at the national, state and local level. As part of our Community Pedestrian and Bicycle Safety Program (CPBSP), UC Berkeley SafeTREC has prepared a new research brief, "Motor vehicle speed as a risk factor in pedestrian safety"...

Research Brief: Towards a Safer California: Addressing the Road Safety Needs of Older Adults

July 19, 2023
Submitted by Lisa Peterson
New research brief explores the factors that contribute to road safety needs of older adults

With an aging state population, it is crucial to understand the factors that contribute to road safety among adults aged 65 and older and identify at-risk neighborhoods for targeted interventions. In a new research brief, Towards a Safer California: Addressing Road Safety Needs of Older Adults, UC Berkeley SafeTREC's Graduate Student Researcher Lekshmy Hirandas analyzes fatal and serious injury (FSI)...