 Well, the warning period is over. Tickets are now going out to drivers who pass stopped school buses in D.C. About 25 city school buses have been equipped with cameras that turn on when the buses stop arms are out and when their red lights are flashing. The D.C. Department of Transportation says it's issued over 170 warnings during this 45-day warning period that's now over. In D.C., most students rely on Metro, while students with disabilities often take the buses.