Road User Behavior

A Framework for the Protective Features of a Safe System

R24: Developing a Framework to Combine the Different Protective Features of a Safe System
Research Team

Principal Investigator
Offer Grembek
University of California, Berkeley


Funding Organization

Collaborative Sciences Center for Road Safety (CSCRS)


Summary Transportation safety professionals strive to build a system on which no street user can be severally or fatality injured on. To accomplish such a safe system, it is necessary to effectively harness all the core protective opportunities...

New Features Added to Street Story Tool

April 20, 2020

Exciting news! Features around micromobility and infrastructure improvements have been added to UC Berkeley SafeTREC’s Street Story, an online community engagement tool that allows residents, community groups and agencies to collect information about transportation collisions, near-misses, general hazards and safe locations to travel. This information is publicly accessible in downloadable maps and tables, and can be easily recorded and shared with community partners....

2019 SafeTREC Traffic Safety Facts: Emergency Medical Services

November 5, 2019

Welcome back to the 2019 SafeTREC Traffic Safety Facts blog series, where we feature recent data on some of California's most pressing traffic safety issues! Explore our recent posts on:

Pedestrian safety Bicycle safety Aging road users...

2019 SafeTREC Traffic Safety Facts: Motorcycle Safety & Occupant Protection

November 4, 2019

Welcome back to the 2019 SafeTREC Traffic Safety Facts blog series, where we feature recent data on some of California's most pressing traffic safety issues! Explore our recent posts on:

Pedestrian safety Bicycle safety Aging road users...

SafeTREC Traffic Safety Facts: Speeding-Related Collisions

September 17, 2018

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...

2019 SafeTREC Traffic Safety Facts: Emergency Medical Services

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2019

There are typically many contributing factors in motor vehicle crashes. Emergency Medical Services (EMS) play a critical role post-crash to reduce fatalities and serious injuries. Recent studies show that an effective emergency trauma care system can improve survival from serious injuries by as much as 25 percent and county-level coordinated systems of trauma care can reduce crash fatalities rates as much as 50 percent.

The Haddon Matrix applies basic principles of public health to motor vehicle-related injuries. The matrix looks at the factors in the pre-crash, crash, and post-...

2019 SafeTREC Traffic Safety Facts: Occupant Protection

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2019

Restraint devices such as seat belts are a key element of motor vehicle occupant protection systems. Each year, the National Highway Traffic Safety Administration (NHTSA) conducts the National Occupant Protection Use Survey (NOPUS) that measures, among many variables, the use of seat belts by occupants age eight and older. The 2018 NOPUS reported an 89.6 percent front seat belt use rate for the nation as a whole, which was essentially level with the 89.7 percent rate in 2017. However, it reflects a significant decrease in the seat belt use rate in the western region from 94.5 percent in...

2019 SafeTREC Traffic Safety Facts: Drug-Impaired Driving

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2019

Driving under the influence of drugs is a significant threat to public safety. Various substances can impair cognition, attention, coordination, and other brain functions critical to driving safety. Unlike alcohol, the mechanism for absorption, distribution, and elimination of drugs from the body, as well as cognitive and behavioral effects differ greatly. The use of cannabis, prescription drugs, and other drugs are increasingly prominent on our roadways, where 22.2 percent of the nation’s 37,133 fatalities in 2017 were related to drug-involved driving.

2019 SafeTREC Traffic Safety Facts: Alcohol-Involved Driving

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2019

While alcohol-involved driving fatalities have fallen significantly in the last three decades, the National Highway Traffic Safety Administration (NHTSA) reports that alcohol-involved driving still comprises a large percentage of traffic injuries and fatalities. On average in 2017, one person died from an alcohol-involved driving collision every 48 minutes. There was a decrease in the numbers of alcohol-involved driving fatalities in the United States between 2016 and 2017. The figures refer to drivers, passengers, bicyclists, and pedestrians fatally killed or seriously injured in an...