A roadside test is a test conducted by the police or authorities to check if someone is under the influence of drugs or alcohol while driving a vehicle. Full definition
Personal injury lawyers, law enforcement officials, and opposition politicians have voiced a variety of concerns, from police readiness to worries about the efficacy of roadside testing devices. (willdavidson.ca)
This could include roadside testing by police of motorists, and also drug testing in the workplace and in prisons. (sciencedaily.com)
For instance, is there a sufficiently accurate roadside test that can be administered to the driver? (lernerspersonalinjury.ca)