Final answer:
Drivers generally must stop at least 20 feet from a school bus with its stop arm extended and red lights flashing unless there's a physical barrier on a divided roadway.
Step-by-step explanation:
The distance a driver must stop from a school bus is typically dictated by state law, but a common rule is to stop at least 20 feet away from the bus when its stop arm is extended and red lights are flashing. An exception to stopping for school buses may apply if the roadway is divided with a physical barrier; in such cases, oncoming traffic may not be required to stop. In physics problems involving buses, calculations might include the distance covered before braking, time taken to stop, and velocity.
According to traffic laws, drivers must stop at least 10 feet away from a school bus when the bus is stopped and has its red lights flashing and stop arm extended. This rule applies to drivers traveling in both directions on any type of road, including multiple-lane highways and streets with posted speed limits of 55 mph or higher. The exception to stopping for school buses is when drivers are traveling on the opposite side of a divided highway that has a median or physical barrier separating the travel lanes. Physics problems can involve calculations related to the bus's stopping distance, time, and velocity.