“…Historically, a body of evidence suggests that the threat of apprehension and subsequent legal sanctions, especially when supported by wellpublicized media campaigns, can produce a deterrent effect, even if short, on offending behavior (Homel, 1988;Grosvenor, Toomey, & Wagenaar, 1999;Nagin & Pogarsky, 2001). More specifically, campaigns to reinforce the consequences of DUI or publicize increases in the severity or certainty of penalties have produced a beneficial effect on crash and serious injury rates (Klein, 1989;Peck, 1991;Ross, 1973Ross, , 1982Ross, , 1985 as well as actual perceptions of arrest certainty (Grosvenor et al, 1999;Homel, 1988).…”