More traffic collisions are occurring in states that have relaxed marijuana laws.
The National Transportation Safety Board reported this week that drug-impaired driving is on the rise across the country, and has been blamed for several high-profile incidents, including a crash last year in which authorities report a 20-year-old man crashed his truck into a church bus while under the influence of marijuana and a sedative. Twelve people on the bus were killed.
CBS Boston reports a 2017 study found an overall increase in car crashes in states that have legalized recreational marijuana. Researchers estimated the frequency of collision claims per insured vehicle year, controlling for differences in other factors that could contribute to an accident, including age, location, job status and weather, and still saw an increase. A second study released this week at the Alcohol- and Drug-Impaired Driving summit at the insurance institute’s Vehicle Research Center, also found an increase of more than 5 percent in the number of traffic collisions.