| Title | 2013–2014 National Roadside Study of Alcohol and Drug Use by Drivers: Methodology |
|---|---|
| Record ID | 60968 |
| Personal Name Creator |
Kelley-Baker, Tara; Lacey, John H.; Berning, Amy; Ramirez, Anthony; Moore, Christine; Brainard, Katharine; Yao, Julie; Tippetts, A. Scott; Romano, Eduardo; Carr, Katherine; Pell, Karen |
| Corporate Creator | Pacific Institute for Research and Evaluation |
| Corporate Contributor |
United States. Department of Transportation. National Highway Traffic Safety Administration. Office of Behavioral Safety Research; National Institute on Drug Abuse; Insurance Institute for Highway Safety |
| Publisher | United States. National Highway Traffic Safety Administration. Office of Behavioral Safety Research |
| Publication Date | 20160700 |
| Language | English |
| Abstract | This report describes the methodology for the National Roadside Study (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 randomly stopping drivers at 300 locations across the continental United States. The locations were selected through a stratified random sampling procedure. Researchers collected the data during a 2-hour Friday daytime session (either 9:30 a.m. to 11:30 a.m. or 1:30 p.m. to 3:30 p.m.) at 60 locations and during four 2-hour nighttime periods (10 p.m. to midnight and 1 a.m. to 3 a.m. on Friday and Saturday nights) at 240 locations, for a total of 300 locations. Data included both self-report and biological measures. Self-report portions were funded by the National Institute of Drug Abuse (NIDA) and the Insurance Institute for Highway Safety (IIHS). An objective was to obtain at least 7,500 oral fluid samples for analysis. Oral fluid and blood samples were subjected to laboratory screening and liquid chromatography-mass spectrometry (LC/MS/MS; the term MS/MS is the combination of two mass analyzers in one mass spec instrument) and gas chromatography-mass spectrometry (GC/MS) confirmation respectively for alcohol and six classes of drugs, allowing researchers to estimate a national prevalence of alcohol and other drugs in drivers. This report describes the field methods used to conduct this study, including data collection procedures. The report also details overall response rates. Two additional reports will present the results of the data collection and analyses. One will focus on alcohol-use prevalence estimates among drivers and compare them with previous NRS results from studies conducted in 1973, 1986, 1996, and 2007. The other will provide drug-use prevalence estimates among drivers, including comparison to the 2007 numbers. This will then present the first trend data on on-road drug-positive driving in the United States. All drivers’ responses were completely voluntary and anonymous. |
| Rosap ID | dot:1978 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/1978 |
| ResearchHub ID | 10794 |
| TRT Terms | Alcohol use; Drug use; Traffic safety; Methodology; Periods of the day; Data collection; Impaired drivers; Surveys |
| General Subjects | Alcohol and driving; drugs and driving; roadside survey; impaired driving; drugged driving; alcohol-involved driving; drug-involved driving; Research Hub |
| Geographical Coverage |
United States |
| TRIS Online Accession No |
1906512 |
| Contract Number | DTNH22-11-C-00216 |
| Report Number | DOT HS 812 294 |
| Availability | NHTSA - Behavioral Safety Research |
| Resource type | Statistical Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/60000/60900/60968/2013-2014-national-roadside-study-alcohol-and-drug-use-drivers-methodology.pdf |
| Format | |
| Database | NTL Digital Repository |