It's School Bus Safety Week!
Prior to stopping, school buses display yellow warning lights that signify the bus is about to stop. Once a bus come to a stop, red flashing lights and a stop sign are displayed.
Motorists approaching a stopped school bus from either direction are required to stop at least 10 feet from the bus while students are getting on or off the bus.
When the road is divided into four or more lanes, only traffic driving in the same direction as the bus must stop. Drivers may not resume their travels until the bus resumes traveling.
Original source can be found here.
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