cannabis impairment testing

Numerous studies have shown the effects of cannabis on driving performance, and the overwhelming consensus is that it impairs driving ability. Research suggests that drivers under the influence of cannabis demonstrate a decreased ability to maintain a steady speed, maintain proper lane positions...

Drug use among commercial truck drivers may be at its highest level since 2019 and the American Transportation Research Institute (ATRI) wants to know why. To that end, it is asking carriers a series of questions on safety and other concerns in relation to state-level marijuana...