School Bus (S) Endorsement Knowledge Test
What the S test covers
The School Bus (S) endorsement is added to the P endorsement. Kansas tests loading and unloading, the 10-foot danger zone, stop arm and light use, railroad crossings, student management, emergency evacuation, and the post-trip check.
Core rules
- Danger zone: the area within 10 feet around the bus. Students there must be seen by you, not assumed.
- Loading: activate amber warning lights before the stop, stop, set parking brake, place transmission in Park or Neutral, then extend the stop arm and red lights and open the door.
- Unloading: count students as they leave; students who must cross wait for your signal and cross at least 10 feet in front of the bus.
- Railroad crossings: stop 15–50 feet from the rail, open the service door, look and listen, close the door, then cross.
- Student management: never discipline while driving; pull over safely first.
- Post-trip: walk the bus, check under seats and in the back for sleeping students, and secure the bus.
Kansas stop law: on a two-lane road, traffic both ways must stop for flashing red lights; on a divided highway with a median, opposite-direction traffic generally need not stop.
Worked example
A student is late and runs toward the bus as you prepare to leave a stop. You keep the red lights on, motion the student to stop, and wait until the student is visible and has crossed in front. Reasoning: the danger zone extends 10 feet; a student who appears at the side or rear may be in a blind spot. Leaving before the student is seated risks a fatality and violates the loading procedure.
Traps
- Retracting the stop arm before students are clear.
- Assuming mirrors show everything in the 10-foot zone.
- Skipping the walk-through and leaving a sleeping student aboard.
- Using amber lights as if they required traffic to stop; only red lights and the stop arm do.