Welcome to the Safe Transportation Research and Education Center

We are part of the University of California, Berkeley, affiliated with the School of Public Health and the Institute of Transportation Studies, with additional partnerships with the Department of City and Regional Planning, Public Policy, and Transportation Engineering.

Our research is carried out by faculty at UC Berkeley with assistance from post-doctoral scholars, research staff, and graduate student researchers. We also help the California Office of Traffic Safety administer its Community Pedestrian Safety Training workshops and support various safety initiatives from other California agencies, Including the California Department of Transportation (Caltrans). 

Most Recent Papers and Announcements

Observational Study of Cell Phone and Texting Use Among California Drivers 2015 and Comparison to 2011 Through 2014 Data

Observational Study of Cell Phone and Texting Use Among California Drivers 2015 and Comparison to 2011 Through 2014 Data
Document Summary: 

This methodological and analysis report outlines the procedures and findings for the fifth annual wave of the “Observational Survey of Cell Phone and Texting Use among California Drivers Study,” conducted by Ewald & Wasserman Research Consultants (E&W) on behalf of the California Office of Traffic Safety (OTS) and the Safe Transportation Research and Education Center (SafeTREC) at the University of California, Berkeley. 

This combined report describes E&W’s survey research and data collection procedures implemented for the fifth wave of this longitudinal study, which collected data of a statistically representative sample on drivers’ distracted driving behaviors, including cell phone and other electronic device use. 

The overall study design included the observation of California vehicle drivers at controlled intersections-such as traffic lights and stop signs-using a data collection protocol similar to the National Occupancy Protection Use Study (NOPUS) methodology published by the National Highway Transportation Safety Administration (NHTSA) on electronic device use by drivers in their Traffic Safety Facts publications, DOT HS 811 372 and DOT HS 811 361. The data collection plan also incorporated sections of the methodological outline of the Seat Belt Survey Regulation for Section 157 Surveys: 23CRF Part 1340, published by NHTSA. 

Paper date: 
June 26, 2015
Driver Behavior: 
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