Impaired Driving

Information relating to impaired driving.

RESEARCH - Blood THC Concentration and Driver Impairment

marihuanaThe American Automobile Association Foundation for Traffic Safety has released a report titled An Evaluation of Data from Drivers Arrested for Driving Under the Influence in Relation to Per se Limits for Cannabis. Researchers examined Drug Recognition Expert (DRE) and impaired driving arrest investigation data and compared the blood levels of THC to observed impairment. The conclusion made was that a quantitative threshold for per se laws for THC following cannabis use cannot be scientifically supported.

BC's IRP Program Survives Another Court Challenge

image of AlcoSensorFST deviceCounsel for Lee Michael Wilson argued that the Approved Screening Device (ASD) result alone could not provide the officer with the reasonable grounds and that the officer was also required to point to other confirmatory evidence. The Supreme Court of Canada ruled today that this is not the case and dismissed the appeal of his Immediate Roadside Prohibition (IRP). The ruling supports the BC Motor Vehicle Act legislation that allows police to quickly and effectively remove impaired drivers from our highways.

CASE LAW - Van Bree v Superintendent of Motor Vehicles

BC Courts Coat of ArmsIt looks like British Columbia's Immediate Roadside Prohibition (IRP) program is under a cloud again. In this case Mr. Justice B.C. MacKenzie is asked to stay a driving prohibition issued under the program to Tony Van Bree on May 23, 2015. The basis for the action is that the IRP legislation challenge has made its way to the Supreme Court of Canada and a decision on its validity in law is pending.

Detecting Drug Impaired Driving

marihuana leafDetecting and successfully prosecuting drug impaired drivers on B.C.'s highways is not a simple task. Currently the Criminal Code provisions for Drug Recognition Expert examination is the only method used to qualify drug induced impairment where the driver is not obviously incapable of physical control. One day in the not too distant future, the Cannabix marihuana breathalyzer may allow police to deal with the problem though a roadside breath test just as they would an alcohol impaired driver.

RESEARCH - Drug Impaired Driving Among Canadian Teens

TIRF New LogoParents must discuss the dangers of driving under the influence of drugs with their teenagers. Currently 36.6% of teen fatalities tested positive for alcohol and 39.2% tested positive for drugs. In this context drugs include illegal, over the counter and prescription drugs. Cannabis was by far the most prevalent substance, with 28.6 per cent of fatally-injured drivers testing positive for it. The trend is downward for alcohol and upward for drugs.