2013–2014 National Roadside Study of Alcohol and Drug Use by Drivers: Alcohol Results
This report describes the alcohol results from the 2013–2014 National Roadside Survey (NRS), a national field study to estimate the prevalence of alcohol-, drug-, and alcohol-plus-drug-involved driving, primarily among nighttime weekend drivers, but also daytime Friday drivers. This study involved a random sample of drivers at 300 locations across the continental United States. The sites were selected through a stratified random sampling procedure. Data was collected during one 2-hour Friday daytime session (either 9:30 to 11:30 a.m. or 1:30 to 3:30 p.m.) at 60 locations and during four 2-hour nighttime periods (10 p.m. to midnight and 1 to 3 a.m. on both Friday and Saturday nights) at 240 locations. Data included observational and biological samples. Biological samples included breath-alcohol measurements from 9,455 respondents, oral fluid samples from 7,881 respondents, and blood samples from 4,686 respondents. This report focuses on the alcohol breath-test results, presents the 2013−2014 prevalence estimates for alcohol-involved driving, and compares them with the four previous NRS studies. The data indicates a continuing trend of decreasing alcohol-involved driving on U.S. roads during weekend nights over the five NRS studies, including a large change in the percentage of drivers who were alcohol positive, from 36.1% in 1973 to 8.3% in 2013-2014, and an 80% reduction in the percentage of drivers with breath alcohol concentrations (BrACs) of .08 grams per deciliter (g/dL) and higher, from 7.5% in 1973 to 1.5% in 2013-2014.
- Dataset URL:
- Record URL:
- Record URL:
- Record URL:
- Dataset URL:
-
Supplemental Notes:
- Supporting dataset available at: https://doi.org/10.21949/1529966;https://rosap.ntl.bts.gov/view/dot/73058
-
Corporate Authors:
Pacific Institute for Research and Evaluation
11720 Beltsville Drive, Ste 900
Calverton, MD United States 20705-3111National Highway Traffic Safety Administration
Office of Behavioral Safety Research, 1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Ramirez, Anthony
- Berning, Amy
- Kelley-Baker, Tara
- Lacey, John H
- Yao, Julie
- Tippetts, A Scott
- Scherer, Michael
- Carr, Katherine
- Pell, Karen
- Compton, Richard
- Publication Date: 2016-12
Language
- English
Media Info
- Media Type: Digital/other
- Edition: Final Report
- Features: Appendices; Figures; Maps; References; Tables;
- Pagination: 76p
Subject/Index Terms
- TRT Terms: Alcohol breath tests; Drunk drivers; Drunk driving; Field studies; Night; Trend (Statistics); Weekends
- Identifier Terms: National Roadside Survey
- Geographic Terms: United States
- Subject Areas: Highways; Safety and Human Factors;
Filing Info
- Accession Number: 01624264
- Record Type: Publication
- Report/Paper Numbers: DOT HS 812 362
- Contract Numbers: DTNH22-11-C-00216L
- Files: HSL, NTL, TRIS, ATRI, USDOT
- Created Date: Jan 27 2017 9:28AM