With school just around the corner, can you talk about stopping for the school bus? ADVERTISEMENTPreviously, the law required drivers to stop for a bus’s red flashing lights and extended stop arm. There’s no more trying to beat the stop arm at the last minute when students are getting on and off the bus. MotoristsRed flashing lights on buses indicate students are either entering or exiting the bus. Motorists must stop at least 20 feet from a school bus that is displaying flashing red lights, regardless of whether the stop arm has been extended.