Following up on my post a few days ago ("Dial-a-Drunk: DUI Vigilantes Are Watching You"):

Signs Put DUI Drivers on Notice

Pittsburgh, Pa. Nov. 1 – State police and PennDOT hope two signs of the time will stick around to save lives. Two illuminated PennDOT message signs put up this week ask drivers to report possibly drunken or drugged motorists…

Drivers calling in reports of possibly impaired drivers is "just like calling Homeland Security about something suspicious," said C. Stephen Erni, of the DUI Association. "We want drivers to be vigilant and this truly means homeland security on the highways," he said.

Homeland security on the highways…