What does a yellow caution light on a school bus indicate?

• A. The bus is about to enter traffic
• B. The bus is in emergency mode
• C. The bus is preparing to stop; slow down and prepare to stop; do not pass if red lights are about to activate
• D. The bus has a mechanical fault

Answer: (C)

A yellow caution light signals that the bus is preparing to stop. It tells drivers to slow down and be ready to stop, and you should not pass if red lights are about to activate. This warning helps give drivers time to react before the bus stops to load or unload students. When the red lights actually flash and the stop arm goes out, all traffic must stop until the lights stop flashing and the bus resumes moving.