 D.C. is now handing out tickets to drivers who drive past school buses with their stop arms out and flashing. About 25 D.C. school buses are now equipped with these stop arms. When buses pick up or drop off students and the bus's red lights start to flash, a stop sign on the side of the bus swings out warning drivers to stop. The system also has video recording equipment to capture the license plates of any cars that drive past while that arm is deployed.