WASHINGTON (AP) – Six states that allow marijuana use legal tests to determine driving while impaired by the drug that have no scientific basis, according to a study by the nation’s largest automobile ...

AAA found in a recent study that 84.8% of cannabis users who responded drove within eight hours of marijuana consumption. How marijuana affects a driver is dependent on how often and much a person ...

America’s Insurance Institute for Highway Safety (IIHS) examined the behavior of more than 40 drivers using two different types of car and driver-assist systems and discovered that the test subjects ...