Transport Canada/MADD Canada commissioned EKOS Research Associates to conduct a study of public attitudes toward impaired driving. The main objective of this research was to measure the concerns, knowledge, attitudes and behaviour of Canadians on impaired driving issues. The study collected relevant information to determine where awareness needs to be heightened and knowledge needs to be increased. The study also provided detailed information about public views on the key impaired driving issues of alcohol ignition interlock systems, driving while impaired by illicit drugs and prescription drugs, and the lowering of the legal blood alcohol concentration (BAC) level from 80mg% to 50mg%.