Advocating for Evidence Based Marijuana Policy
Tag Archives: Driving
Teen driving and marijuana use: More than one in four high school seniors drive after using alcohol or drugs, or ride with a driver who has.
Patrick M. O’Malley, Lloyd D. Johnston. Driving After Drug or Alcohol Use by US High School Seniors, 2001–2011. American Journal of Public Health, 2013; e1 DOI: 10.2105/AJPH.2013.301246
Deadly drugged driving: Drug use tied to fatal car crashes
Source: (As reported in ScienceDaily, June 23, 2011) Journal of Studies on Alcohol and Drugs. (2011, June 23). Deadly drugged driving: Drug use tied to fatal car crashes. ScienceDaily. Retrieved May 21, 2014 from www.sciencedaily.com/releases/2011/06/110623085953.htm
It’s well known that drunk driving can have fatal consequences, but a tumblr post suggests that alcohol is not the only drug that’s a danger on the road. Researchers found that of US drivers who died in a crash, about 25 percent tested positive for drugs. The most common drugs were marijuana and stimulants, including cocaine and amphetamines.
Eduardo Romano, Robert B. Voas. Drug and Alcohol Involvement in Four Types of Fatal Crashes. Journal of Studies on Alcohol and Drugs, 2011;
Drivers who test positive for drugs have triple the risk of fatal car crash
Source: (As reported in ScienceDaily, September 25, 2013) Columbia University’s Mailman School of Public Health. (2013, September 25). Drivers who test positive for drugs have triple the risk of fatal car crash. ScienceDaily. Retrieved May 20, 2014 from www.sciencedaily.com/releases/2013/09/130925185612.htm
In a tumblr post researchers assessed the association of driver drug use, as well as the combination of drugs and alcohol, with the risk of fatal crash. They found that drug use is associated with a significantly increased risk of fatal crash involvement, particularly when used in combination with alcohol. The study provides critical data for understanding the joint effect of alcohol and drugs on driving safety.
Guohua Li, Joanne E. Brady, Qixuan Chen. Drug use and fatal motor vehicle crashes: A case-control study. Accident Analysis & Prevention, 2013; 60: 205 DOI: 10.1016/j.aap.2013.09.001
New study shows cannabis effects on driving skills
Source: (As reported in ScienceDaily, March 1, 2013) American Association for Clinical Chemistry (AACC). (2013, March 1). New study shows cannabis effects on driving skills. ScienceDaily. Retrieved May 20, 2014 from www.sciencedaily.com/releases/2013/03/130301122256.htm
Cannabis is second only to alcohol for causing impaired driving and motor vehicle accidents. In 2009, 12.8% of young adults reported driving under the influence of illicit drugs and in the 2007 National Roadside Survey, more drivers tested positive for drugs than for alcohol. These cannabis smokers had a 10-fold increase in car crash injury compared with infrequent or nonusers after adjustment for blood alcohol concentration.
M. M. Bergamaschi, E. L. Karschner, R. S. Goodwin, K. B. Scheidweiler, J. Hirvonen, R. H. C. Queiroz, M. A. Huestis. Impact of Prolonged Cannabinoid Excretion in Chronic Daily Cannabis Smokers’ Blood on Per Se Drugged Driving Laws. Clinical Chemistry, 2013; DOI: 10.1373/clinchem.2012.195503
Signs point to sharp rise in drugged driving fatalities
Source: (As reported in ScienceDaily, January 30, 2014) Columbia University’s Mailman School of Public Health. (2014, January 30). Signs point to sharp rise in drugged driving fatalities. ScienceDaily. Retrieved May 20, 2014 from www.sciencedaily.com/releases/2014/01/140130111003.htm
The prevalence of non-alcohol drugs detected in fatally injured drivers in the US steadily rose from 1999 to 2010 and especially for drivers who tested positive for marijuana. Researchers found that of 23,591 drivers who were killed within one hour of a crash, 39.7 percent tested positive for alcohol and 24.8 percent for other drugs. The prevalence of non-alcohol drugs rose from 16.6 percent in 1999 to 28.3 percent in 2010; for marijuana, rates rose from 4.2 percent to 12.2 percent.
J. E. Brady, G. Li. Trends in Alcohol and Other Drugs Detected in Fatally Injured Drivers in the United States, 1999-2010. American Journal of Epidemiology, 2014; DOI: 10.1093/aje/kwt327
Marijuana use may double the risk of accidents for drivers, study finds
Source: (As reported in ScienceDaily, October 7, 2011) Columbia University’s Mailman School of Public Health. (2011, October 7). Marijuana use may double the risk of accidents for drivers, study finds. ScienceDaily. Retrieved May 20, 2014 from www.sciencedaily.com/releases/2011/10/111006173453.htm
Researchers have found that drivers who test positive for marijuana or report driving within three hours of marijuana use are more than twice as likely as other drivers to be involved in motor vehicle crashes. The researchers also found evidence that crash risk increases with the concentration of marijuana-produced compounds in the urine and the frequency of self-reported marijuana use.
M.-C. Li, J. E. Brady, C. J. DiMaggio, A. R. Lusardi, K. Y. Tzong, G. Li. Marijuana Use and Motor Vehicle Crashes. Epidemiologic Reviews, 2011; DOI: 10.1093/epirev/mxr017
Underage college men discount dangers of driving after marijuana use
Source: (As reported in ScienceDaily, May 14, 2014) University of Massachusetts at Amherst. (2014, May 12). Underage college men discount dangers of driving after marijuana use. ScienceDaily. Retrieved May 20, 2014 from www.sciencedaily.com/releases/2014/05/140512214039.htm
Underage male college students who report using marijuana in the month before they were surveyed had a high prevalence of driving under its influence and of riding with a marijuana-using driver, at a rate more than double that of driving or riding after alcohol use, say researchers.
Jennifer M. Whitehill, Frederick P. Rivara, Megan A. Moreno. Marijuana-Using Drivers, Alcohol-Using Drivers, and Their Passengers. JAMA Pediatrics, 2014; DOI: 10.1001/jamapediatrics.2013.5300