Prevalence and trends of drugged driving in Canada
Trends in drug use among drivers killed in U.S. traffic crashes, 1999–2010
Medication use and the risk of motor vehicle collisions among licensed drivers: A systematic review
Fatal and serious injuries related to vulnerable road users in Canada
Alcohol, psychoactive drugs and fatal road traffic accidents in Norway: A case–control study
Driving under the influence of drugs: Perceptions and attitudes of New Zealand drivers
Drug identification performance on the basis of observable signs and symptoms
Prevalence of alcohol and drugs among Norwegian motor vehicle drivers: A roadside survey
Alcohol and drugs in fatally and non-fatally injured motor vehicle drivers in northern Sweden