ND CDL School Bus key terms

A systematic walk-around check of the bus before driving, covering tires, lights, brakes, mirrors, emergency exits, and fluid leaks, done to catch defects that could cause a breakdown or crash.

A three-part check of static leakage, applied leakage, and low-air warning before driving; it confirms the system holds pressure and that the warning buzzer and spring brakes engage at safe levels.

A parking and emergency brake powered by a heavy spring that applies automatically when air pressure drops too low, so a serious leak brings the bus to a stop rather than letting it roll.

A buzzer and light that activate when air pressure falls below a safe operating level, warning the driver to stop and find the leak before the spring brakes apply on their own.

Verification that every side door, rear door, roof hatch, and window exit opens freely and that the exit alarm or buzzer works, so passengers can escape in a fire or rollover.

The extendable red sign on the left side of a school bus that swings out with flashing red lights to stop traffic while students board or leave the bus.

Alternating flashing red lamps on the front and rear of a school bus that signal traffic to stop in both directions while children are entering or exiting the roadway.

Alternating flashing yellow lamps a driver turns on well before a stop to warn traffic that the bus is about to load or unload and will soon display red lights.

The procedure in which the driver leaves the seat, checks traffic, and escorts students across the road in front of the bus, using hand signals and the stop arm to hold traffic.

The area within roughly ten feet around a school bus where children are hardest to see; the driver must account for every student leaving this zone before moving the bus.

Any area around the bus that cannot be seen in the mirrors or through the windshield; large mirrors reduce but never eliminate it, so the driver must turn the head and check before moving.

Setting the crossover, side, and convex mirrors so the driver can see the rear tires, the sides of the bus, and the area just ahead of the bumper before every trip.

A green signal that has been green for a long time and may change before the bus reaches the intersection, so the driver should prepare to stop instead of accelerating.

The margin of empty roadway kept around the bus on all sides so the driver has room to stop or steer away when traffic ahead suddenly slows or a hazard appears.

The gap behind the vehicle ahead, measured in seconds by counting from when it passes a fixed object until the bus reaches the same point; four or more seconds are needed at highway speed.

Squeezing the brake pedal progressively and releasing it just before a full stop to avoid a sudden jolt, which is important with standing passengers and unsecured students.

Applying throttle gradually so the bus gains speed without lurching, keeping standing students balanced and reducing the chance of a fall in the aisle.

Upshifting at lower engine rpm as the vehicle accelerates, used with many manual transmissions to save fuel and reduce wear while keeping engine speed in its efficient range.

A shifting method using two clutch presses per gear change, one to leave the gear and one to enter the next, needed in non-synchronized transmissions to match gear speeds and avoid grinding.

The small amount of pedal travel before the clutch begins to disengage; too little or too much free play causes slipping or incomplete release and should be checked before driving.

A device that slows the bus by restricting exhaust flow or using the engine's compression, helping control speed on long downgrades without overheating the service brakes.

Loss of stopping power caused by overheated brake drums and linings after repeated hard or prolonged braking, especially on downgrades; the driver should slow down and use engine braking instead.

Loss of tire contact with the road when water builds up under the tires; the bus can slide and steering becomes ineffective, so the driver should slow down and avoid sudden moves in rain.

Regaining control after tires lose traction by releasing the brakes, steering in the direction the bus should go, and avoiding hard braking until grip returns.

A regular scanning routine of looking far ahead, then near, then to the sides and mirrors, so the driver notices changing traffic, pedestrians, and road conditions early enough to respond.

Looking well down the road rather than at the bumper, which lets the driver steer smoothly, spot hazards sooner, and avoid the tailgating that often follows a wandering path.

The number of seconds the driver looks ahead while driving; a longer lead time gives more time to react and is essential at highway speeds and in poor visibility.

Driving faster than the distance lit by the headlights, so the bus cannot stop within the visible roadway; at night the driver should reduce speed to match the light beam.

The headlight setting used in fog, rain, and snow and when following or meeting traffic, because it casts light down onto the road instead of reflecting it back into the driver's eyes.

Reducing speed, using low beams, increasing following distance, and staying within the lane when visibility drops; pulling completely off the road is safer than stopping in the travel lane.

The time the eyes need to readjust after bright light, such as oncoming headlights or sunrise; drivers should look toward the right edge of the lane and slow down until vision returns.

Any activity that takes the driver's eyes, hands, or mind off the road, including phones, eating, dispatching, and managing passengers; a school bus driver must avoid all of them.

Maintaining order on the bus through clear rules, calm verbal correction, and assigned seating, so student behavior does not distract the driver from traffic and the roadway.

Aggressive driving by another motorist that escalates into threats or retaliation; the safe response is to avoid eye contact, yield, and report the incident rather than engage.

Speeding, tailgating, weaving, and running signals by other drivers; a bus driver should let them pass, keep a large space cushion, and never compete for position.

The risk of a vehicle passing on the right while the bus swings wide for a turn; the driver should check the right mirror and convex mirror and block the lane before turning.

Stopping the bus, opening the door or window to listen, checking both directions, and crossing only when clear, with the driver ensuring no student is left on the tracks.

Any condition or road user that could force a change in speed or direction, such as a ball rolling into the street, a cyclist, or a construction zone; spotting it early buys reaction time.