Impaired Driving Statistics and Resources

Prevalence of High BAC in Alcohol-Impaired-Driving Fatal Crashes (PDF)
National Highway Transportation Safety Administration, 2012
A traffic safety facts sheet that examines the relationship between high blood alcohol content levels and alcohol-impaired-driving fatal crash statistics.

TxDOT Creates Original “Telenovelas” Series to Reach Hispanics
AASHTO Journal, July 8, 2011
The Texas Department of Transportation created a campaign in a mini “telenovelas” series format to educate the Hispanic community about the consequences of drinking and driving. The telenovelas are airing as 30-second and two-minute spots on Univision, Estrella, and Telefutura in markets throughout Texas including Austin, Dallas, El Paso, Houston, Rio Grande Valley, and San Antonio. They are also available on TxDOT’s YouTube Channel.

A Safer Way Home: the Minnesota Safe Ride Guide
University of Minnesota Center for Transportation Studies, 2010
This guide gives step-by-step advice to individuals or groups wanting to start a safe ride service in their community. Information for program organizers, as well as key questions to consider, have been culled from research and other successful programs and organized into an easy-to-use format.

Young Impaired Drivers
Transportation Research Board, 2009
Transportation Research Circular E-C132
Overview of the information presented and discussions among the participants at a June 3-4, 2008, workshop that explored the risks posed by young impaired drivers and how these risks might be ameliorated.

A Summary Report of Six Demonstration Projects to Reduce Alcohol-impaired Driving Among 21- to 34-year-old Drivers (PDF)
National Highway Traffic Safety Administration, 2008

Evaluation of seven publicized enforcement demonstration programs to reduce impaired driving: Georgia, Louisiana, Pennsylvania, Tennessee, Texas, Indiana, and Michigan (PDF)
National Highway Traffic Safety Administration, 2008

Differences in Driver Alcohol Involvement by Age Group and Vehicle Type (PDF)
National Highway Traffic Safety Administration, 2007
DOT HS 810 754
This research note identifies significant differences in blood alcohol concentration (BAC) values between age groups and vehicle types in fatal crashes. An important finding of this study is that BAC values for motorcycle operators are distributed differently than BAC values of passenger vehicle drivers. The analysis also revealed that older drivers involved in fatal crashes tend to have lower BAC values than drivers from other age groups involved in fatal crashes. The statistical techniques used in this research note visually demonstrate the severity of the impaired-driving problem in that the majority of alcohol-involved drivers killed in fatal crashes exceed the legal per se limit of .08 grams per deciliter (g/dL).

Methodology for Determining Motorcycle Operator Crash Risk and Alcohol Impairment. Volume I: Synthesis Report on Alternative Approaches with Priorities for Research (PDF)
National Highway Traffic Safety Administration, 2007
DOT HS 810 761
Alcohol involvement continues to be a prominent factor in motorcycle crashes. Drinking and driving have been researched extensively, and the relationship between a drivers’ blood alcohol concentration (BAC) and crash risk is well understood. Unfortunately, our current understanding of the effects of BAC on motorcycle operation is insufficient. Though there is some data available on BAC for crash-involved riders, there is essentially no data on the incidence of alcohol involvement in the onroad motorcycle-riding population. This project examined a variety of approaches by which the effects of alcohol on motorcycle rider impairment and crash risk can be measured.

Methodology for Determining Motorcycle Operator Crash Risk and Alcohol Impairment. Volume 2: Literature Review Report (PDF)
National Highway Traffic Safety Administration, 2007
DOT HS 810 762
Alcohol involvement continues to be a prominent factor in motorcycle crashes. Drinking and driving have been researched extensively, and the relationship between a drivers’ blood alcohol concentration (BAC) and crash risk is well understood. Unfortunately, our current understanding of the effects of BAC on motorcycle operation is insufficient. Though there is some data available on BAC for crash-involved riders, there is essentially no data on the incidence of alcohol involvement in the onroad motorcycle-riding population. This project examined a variety of approaches by which the effects of alcohol on motorcycle rider impairment and crash risk can be measured.

Guidelines for the Community Supervision of Impaired Driving Offenders (PDF)
National Highway Traffic Safety Administration, 2008
Traffic Safety Facts – Traffic Tech No. 342
Driving while impaired (DWI) offenders comprise a significant proportion of the criminal justice population. According to the uniform crime reporting data, in 2005 approximately 1.4 million arrests occurred for impaired driving, which creates an enormous burden on an already overwhelmed criminal justice system. The vast majority of convicted impaired driving offenders are supervised in the community.

Zero Blood Alcohol Concentration Limits for Drivers under 21: Lessons from Canada
BMJ Publishing Group, 2008
Injury Prevention Vol. 14 No. 2
Graduated licensing programs (GLPs) typically require that young drivers that are subject to the program maintain a zero or low blood alcohol concentration (BAC) while driving. Although GLPs have proven to be an effective way to improve traffic safety, a major drawback of such programs, at least in Canada, is that the BAC restriction is lifted on completion of the GLP, which typically occurs around the age of 18 or 19. This corresponds to the legal drinking age in Canada, a time when alcohol consumption and rates of binge drinking increase. It is not surprising, then, that 18-20 year-old drivers are dramatically overrepresented in alcohol-related deaths and injuries. In jurisdictions like Canada that are unlikely to raise the legal drinking age, other measures are necessary to separate drinking from driving among 18-20 year-olds. This article recommends that the zero BAC restrictions be extended beyond the completion of the GLP, until drivers reach the age of 21.

Impaired Motorcycle Operation, Final Report Volume II: Riders Helping Riders Instructor Manual (PDF)
National Highway Traffic Safety Administration, 2007
DOT HS 810 907
Riders Helping Riders (RHR) is an instructional program designed to encourage motorcyclists to intervene to prevent drinking and riding by their motorcyclist peers. The program is based on focus group research which found that riders consider themselves to be united by an interest in riding, and willing to help other riders in need, but that a sense of individualism limits the extent to which riders are willing to intervene in drinking and riding. RHR is intended to convince motorcyclists that an impaired rider needs their help, and that they are in the best position to provide help. The program provides a “toolkit” of techniques for separating drinking from riding, discouraging riders from becoming impaired, recognizing impairment, and discouraging impaired riders from riding.

Impaired Motorcycle Operation, Final Report Volume III: Riders Helping Riders Student Manual (PDF)
National Highway Traffic Safety Administration, 2007
DOT HS 810 908
Riders Helping Riders (RHR) is an instructional program designed to encourage motorcyclists to intervene to prevent drinking and riding by their motorcyclist peers. The program is based on focus group research which found that riders consider themselves to be united by an interest in riding, and willing to help other riders in need, but that a sense of individualism limits the extent to which riders are willing to intervene in drinking and riding. RHR is intended to convince motorcyclists that an impaired rider needs their help, and that they are in the best position to provide help. The program provides a “toolkit” of techniques for separating drinking from riding, discouraging riders from becoming impaired, recognizing impairment, and discouraging impaired riders from riding.

Effects of Alcohol on Motorcycle Riding Skills
National Highway Traffic Safety Administration, 2007
DOT HS 810 877

Traffic Safety and Alcohol Regulation: A Symposium: June 5-6, 2006, Irvine, California (PDF)
Transportation Research Board, 2007
Transportation Research Circular E-C123
This circular contains the proceedings from a symposium held at the National Academies’ Beckman Conference Center in Irvine, California, on June 5-6, 2006. The purpose of the symposium was to review and synthesize most promising strategies in alcohol regulation in order to reduce alcohol-impaired driving.

Driving Performance During Cell Phone Conversations and Common In-Vehicle Tasks While Sober and Drunk
Minnesota Department of Transportation, 2005
Mn/DOT 2005-41

Drugs and Traffic: A Symposium: June 20–21, 2005, Woods Hole, Massachusetts (PDF)
Transportation Research Board, 2006
Transportation Research Circular E-C096

Implementing Impaired Driving Countermeasures: Putting Research Into Action: A Symposium, August 21-23, 2003, Irvine, California (PDF)
Transportation Research Board, 2005
Transportation Research Circular E-C072