KS CDL School Bus cheat sheet
KS CDL School Bus · Keep the key ideas within reach.
School Bus Endorsement (S) Knowledge Test
Kansas requires the S endorsement to drive a school bus designed to carry 16 or more passengers including the driver; a bus carrying fewer than 16 including the driver uses the passenger (P) endorsement rules instead.
The S endorsement is added to a CDL only after passing the school bus knowledge test; a CDL holder who already has P still must pass the S test to drive a school bus.
Before loading or unloading students, the driver must activate the amber warning lights, stop the bus in the proper position, set the parking brake, place the transmission in neutral (or park), and open the service door to activate the red lights and stop arm.
Kansas law requires the stop signal arm and red flashing lights to be used whenever students are crossing or entering/exiting the bus; traffic in both directions must stop except on a divided highway where oncoming traffic is separated by a median.
The driver must account for every student at unloading: count students as they exit, check that all clear the danger zone, and walk to the rear of the bus to verify no student remains aboard before securing the bus.
Danger zone is the area within 10 feet around the bus; students must be taught to wait for the driver's signal before crossing and to cross at least 10 feet in front of the bus so the driver can see them.
Railroad crossings require stopping the school bus, opening the service door or driver's window, turning off noise sources, and listening and looking both ways before proceeding; Kansas law also requires stopping at crossings when carrying students.
Required school bus equipment includes stop arm, flashing red and amber lights, crossing gate (where equipped), fire extinguisher, first aid kit, emergency exits, and a securely mounted two-way radio or communication device.
Post-trip inspection requires the driver to walk the aisle, check under and between seats for sleeping or hidden students, and verify emergency exits and windows before leaving the bus.
Passenger (P) Endorsement Knowledge Test
The P endorsement is required to drive a vehicle designed to carry 16 or more passengers including the driver; it is not required for a school bus operated under the S endorsement if the driver already holds P.
Before driving, the driver must perform a pre-trip inspection of the bus, check passenger doors and emergency exits, verify the fire extinguisher and first aid kit, and confirm brakes and lights work.
Loading and unloading: stop in a safe location, set the parking brake, place the transmission in neutral or park, and supervise passengers as they board or exit.
Passengers must be seated and secure before the bus moves; standing passengers are only allowed where the vehicle is designed for standees and local rules permit.
The driver is responsible for passenger safety, including enforcing no smoking, no hazardous materials, and no interference with the driver; unruly passengers may be removed at the next safe stop.
When a bus is involved in a crash or breakdown, the driver must secure the scene, warn traffic with reflective triangles or flares, and evacuate passengers only if there is fire or danger.
Height clearance and route planning matter: know the vehicle's height, weight limits, and turning radius; bridges and overpasses must be checked before travel.
Braking on a bus with air brakes requires understanding the lag between pedal application and brake engagement; maintain a following distance of at least one second per 10 feet of vehicle length.
Emergency evacuation: know exit locations, use the evacuation signal, assist passengers with disabilities, and account for all passengers after evacuation.
School Bus Road Test
The road test is conducted in a school bus representative of the type the driver will operate; the driver must demonstrate pre-trip inspection, basic control, and on-road driving.
Pre-trip inspection items include engine compartment, lights, tires, brakes, emergency exits, stop arm, and warning lights; the examiner will ask the driver to identify and explain each item.
Basic control skills include straight-line backing, offset backing, and parallel parking within a marked area; hitting cones or crossing boundary lines counts as points against the score.
On-road driving tests lane control, turns, lane changes, railroad crossings, and stop-arm procedures; the driver must use proper signals and mirror checks throughout.
At railroad crossings, the driver must stop, open the door or window, look and listen, and proceed only when clear; failing to stop is an automatic failure.
The driver must demonstrate proper loading and unloading procedures, including activating amber lights, stopping, setting the brake, and using the stop arm.
Examiners score on a point system; accumulating too many points or committing a critical error such as running a red light or striking a cone results in failure.
The driver must demonstrate smooth braking and acceleration, proper gear selection, and awareness of the vehicle's size and blind spots.