What should you do if you encounter a school bus with its stop arm extended?

Answer: B — Stop your vehicle and wait until the arm is retracted

When you encounter a school bus with its stop arm extended, the correct action is to stop your vehicle and wait until the arm is retracted. This is vital for the safety of children getting on or off the bus, as they may be crossing the road. The stop arm is a clear signal that vehicles must halt to protect students, who might be in a vulnerable position. Failure to stop when the arm is out can lead to serious consequences, including traffic violations and increased risk of accidents. The law mandates that drivers must stop for a school bus with its stop arm extended, regardless of the direction from which they are approaching, unless there is a physical barrier like a median separating the bus and the nearby traffic. This practice reinforces the importance of adhering to traffic laws designed to keep students safe, emphasizing the responsibility that drivers have when it comes to protecting children around school zones.