the famous slogan developed by the us department of transportation for designated drivers is
Designated driver The concept was imported to the United States on a large scale in 1988 through the Harvard Alcohol Project,[2] an initiative by the Harvard School of Public Health's Center for Health Communication, led by Jay Winsten. With heavy involvement by television networks and Hollywood studios, the campaign popularized the concept through public service announcements, as well as the encouragement of drunk driving prevention messages and designated driver references in popular television programs,[2] such as Cheers, L.A. Law, and The Cosby Show. The U.S. Department of Transportation used public affairs commercials with the phrase "friends don't let friends drive drunk".[2]