Subjects who operate a vehicle under the influence of cannabis tend to drive more slowly while those under the influence of alcohol tend to increase their speed, according to driving simulator data published in the journal Traffic Injury Prevention. Investigators with the University of Iowa assessed simulated freeway driving performance in subjects following their use of cannabis, alcohol and placebo.
Compared to the placebo group, those under the influence of cannabis “spent more time at speeds significantly below the speed limit”. By contrast, those under the influence of alcohol “spent close to 40% of their time more than 10% above the speed limit”. Several other studies have similarly reported that drivers under the influence of cannabis tend to exhibit more compensatory driving behaviours, while those under the influence of alcohol tend to drive in a more reckless manner.
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27 September, 2024