Report: Smoking Marijuana Doubles Risk of Car Crashes

Canadian researchers say that smoking marijuana within three hours of driving can double your risk of being in a car crash. According to CBC News, a new study published in the British Medical Journal found a positive correlation between smoking marijuana and vehicle accident risks. The study looked at reports from 49,411 car accident victims and evaluated which drivers either had traces of marijuana in their blood streams, or reported smoking marijuana up to three hours before driving. Those who had used the drug before driving were found to have twice the risk of being involved in a car accident, compared to non-users. Researchers told CBC that more research is needed to truly determine how much marijuana affects driving ability, but confirm that there is a strong correlation shown in the data. They said smoking marijuana likely has less of an influence on driving danger than drinking alcohol, but that more tests are required. Currently, it is tough to test for marijuana use in drivers because of difficulties in measuring the amount of key chemicals, including tetrahyrocannabinol (THC) in the bloodstream. One professor told CBC that there aren't enough law enforcement efforts to deter people from driving after using marijuana. Source: CBC News

Patrick Perkins
I didn't find this to be propaganda, but information. Turns out when you smoke a mild hallucinogen it can affect your driving. Weird how that works. It's probably why I try to take mass transit when I smoke. There's no reason that the effort to decriminalize pot should be lying about the affects of marijuana on people, any more than it should threaten to kill people simply because we don't like what their information shows: That's what the bad guys do.
This is more reefer madness crap. This author of this article should be lined up and shot for perjury and excessive bullshit. Here's a recent test. 100 drunks and 100 stoners test driving around an oval track. 100 stoners stayed on the track. 100 drunks could not negotiate the first turn. What's that tell ya???? huh ? huh?
Justin George
A blood alcohol level of 0.08% makes you 11-12 times more likely to have an accident (higher BAC obviously significantly increases the rates), texting makes you 23 times more likely. Making an entire article out of 2x is fear mongering. We all know that marijuana is much safer than alcohol. If we really cared about harm prevention and safety we would legalize marijuana so adults had a safer option available if they so chose. States with medical marijuana programs saw a 9% decrease in traffic fatalities due to alcohol sales dropping. Alcohol is a factor in 73% of all felonies, 73% of child beating cases, 41% of rape cases, 80% of wife battering cases, 72% of stabbings, and 83% of homicides. And this is the ''legal drug'' we let be advertised and consumed everywhere? Can we at least be honest enough to admit that our current model of substance use is wrong and ignores the facts?
shawn christopher
"Prohibition... goes beyond the bound of reason in that it attempts to control a man's appetite by legislation and makes a crime out of things that are not crimes. A prohibition law strikes a blow at the very principles upon which our government was founded" -Abraham Lincoln "The prestige of government has undoubtedly been lowered considerably by the prohibition law. For nothing is more destructive of respect for the government and the law of the land than passing laws which cannot be enforced. It is an open secret that the dangerous increase of crime in this country is closely connected with this." - Albert Einstein quote on Hemp "Two of my favorite things are sitting on my front porch smoking a pipe of sweet hemp, and playing my Hohner harmonica." - Abraham Lincoln (from a letter written by Lincoln during his presidency to the head of the Hohner Harmonica Company in Germany) "Hemp is of first necessity to the wealth & protection of the country." - Thomas Jefferson, U.S. President "Make the most you can of the Indian Hemp seed and sow it everywhere." - George Washington, U.S. President "We shall, by and by, want a world of hemp more for our own consumption." - John Adams, U.S. President
shawn christopher
haha. what a joke. nobody believes this crap any more. any author of articles such as this should draw his entire career and integrity into question. all the studies have been done. the results are extremely conclusive. marijuana does not effect peoples driving negatively and in some they even showed an improvement in driving. being more careful and paying more attention to surroundings. This story is full of refer madness and lies. These scare tactics wont work any more, the truth is out. anyone who refuses to believe the truth is going to be left behind in history.
Malcolm Kyle
ADDITIONAL DATA: * Relative risk of vehicle collision whilst under the 'acute' influence of cannabis is 1.92 whilst the relative risk of a similar vehicle accident with a blood alcohol content of 0.8 g/100 mL (the legal limit in many places) is 2.69. * A 2002 review of seven separate studies involving 7,934 drivers reported, "Crash culpability studies have failed to demonstrate that drivers with cannabinoids in the blood are significantly more likely than drug-free drivers to be culpable in road crashes." REFERENCE: G. Chesher and M. Longo. 2002. Cannabis and alcohol in motor vehicle accidents. * A driver with a blood alcohol concentration (BAC) of 0.10 or greater is seven times more likely to be involved in a fatal motor vehicle crash than is a driver who has not consumed alcoholic beverages, and a driver with an alcohol concentration of 0.15 or greater is about 25 times more likely. * In a 60 km/h zone the risk of involvement in a vehicle accident with casualties increases exponentially (doubles) with each 5 km/h increase in traveling speed. * Talking on a Cell phone while driving Increases accident risk by a factor of 4. * Texting while driving Increases accident risk by a factor of 23. * Eating and drinking is a factor in more accidents than DUI, cell phone use or texting while driving. * The smokers of cigarettes - even if they do not smoke while driving - have an increased accident risk of 1.5 * Smoking cigarettes while driving Increases accident risk by a factor of 2. * Alcohol-related accidents are so prevalent, an estimated 40 percent of all persons in the United States will be involved in a traffic mishap blamed on alcohol at some point in their lives. *** It is important to note that once marijuana is 'Legalized and Regulated', it will still be an offense to drive while impaired - DUI laws already apply to marijuana just like they do alcohol. The fact that being under the influence of a substance makes you a worse driver should have no bearing on its legality in general - otherwise we would be forced to hand the market in alcohol back to machine-gun tooting bootleggers.
Malcolm Kyle
On 29-Nov-2011, a study was published by University of Colorado Denver Professor Daniel Rees and Montana State University Assistant Professor D. Mark Anderson showing states that have legalized medical marijuana experience fewer fatal car crashes compared to states that have not. The researchers suggest that there may be fewer fatal drunk driving accidents in those jurisdictions because more people may be choosing to smoke marijuana instead of making the more dangerous choice of consuming alcohol - both traffic fatalities and alcohol consumption declined. The rate of fatal crashes in which a driver had consumed any alcohol dropped 12% after medical marijuana was legalized, and crashes involving high levels of alcohol consumption fell 14%. The study thoroughly accounted for other contributing factors regarding this decrease, such as changes in the number of miles traveled each year and new traffic laws. "Our research suggests that the legalization of medical marijuana reduces traffic fatalities through reducing alcohol consumption by young adults," - Daniel Rees, professor of economics at the University of Colorado Denver who co-authored the study with D. Mark Anderson, assistant professor of economics at Montana State University. So, the prohibitionist scare-tactic of claiming there would be an increase in traffic fatalities if marijuana were to be legally regulated for all adults should now be banished to the fantasy realm from whence it came.

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