Drug-impaired driving is a problem on America’s highways. Like drunk driving, drug-impaired driving is impaired driving, which means it is dangerous and illegal in all 50 States, Puerto Rico, and Washington, DC. Whether the drug is legally prescribed or illegal, drug-impaired driving poses a threat to the driver, vehicle passengers, and other road users. The U.S. Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) wants to spread the word about drug-impaired driving and to remind all drivers: If you are impaired by drugs and thinking about driving, pass your keys on to a sober driver. If You Feel Different, You Drive Different.