OK CDL School Bus key terms

The area within roughly 10 feet around a school bus where students are hardest to see and most at risk of being struck, including the front, rear, and both sides.

Any area around the bus that the driver cannot see directly or through the mirrors, especially close to the front bumper, rear bumper, and along the sides.

A rounded mirror mounted on the bus that widens the driver's side and rear view but makes objects appear smaller and farther away than they really are.

A mirror mounted at the front of the bus, often on the hood or fender, that lets the driver see the area directly in front and alongside the bus.

The pre-trip practice of setting each mirror so the driver can see the required areas around the bus, including the front bumper, rear wheels, and side danger zones.

The designated area at a bus stop where students board or exit the bus, which the driver must keep clear of traffic and monitor until students are safely away.

The practice of counting students as they leave and re-board the bus so the driver confirms every student is accounted for before moving the vehicle.

A quick tally of students on the bus, used together with seat checks to make sure no child remains on board after a route or at the end of the day.

A required walk-through of the bus at the end of a route or trip to find any student who fell asleep or was left behind, done before the bus is secured.

The hinged sign on the left side of the bus that swings out when students are loading or unloading, warning traffic to stop in both directions where required.

The warning lights activated on the school bus when it is stopped to load or unload students, signaling that traffic must stop as required by law.

The yellow lights a driver activates before stopping to load or unload students, giving following and oncoming traffic advance notice that a stop is coming.

The offense of passing a school bus that is stopped with its red lights flashing and stop arm extended, which carries serious penalties in most states.

A place where a road crosses railroad tracks at the same level, requiring the bus driver to stop, look, and listen before proceeding across the tracks.

The white X-shaped sign posted at a railroad crossing that marks the location and yields the right of way to trains; it is not a speed or stop sign by itself.

A railroad crossing signal that warns of an approaching train using flashing lights, bells, or gates, which the driver must obey even if no train is visible.

The check that there is enough room on the far side of the tracks for the entire bus to clear the crossing before the driver starts across.

The walk-through of the bus after a route or trip to check for students left on board, damage, and items left behind, and to secure the vehicle.

The systematic check of lights, brakes, tires, mirrors, emergency equipment, and other safety items performed before driving the bus each day.

A test of the air brake system, including static leakage and low-pressure warning checks, done to confirm the brakes will hold and function before driving.

An electronic system that automatically pumps the brakes during hard stops to prevent wheel lockup and help the driver keep steering control.

The loss of stopping power that happens when brakes overheat from repeated or prolonged use, common on long downgrades if the driver rides the brakes.

A braking technique for vehicles without antilock brakes in which the driver applies the brakes fully, releases when wheels lock, and reapplies to regain control.

A device that uses engine compression or exhaust restriction to slow the bus on downgrades, reducing reliance on the service brakes and helping prevent overheating.

The controlled removal of students from the bus in an emergency, done through the safest exit while the driver directs students to a safe assembly point.

Any door, window, roof hatch, or other designated opening on the bus intended for rapid escape, which must be kept unobstructed and checked during inspections.

The steps taken after a collision, including stopping safely, checking for injuries, protecting the scene, notifying authorities, and accounting for students.

The portable extinguisher carried on the bus for small fires, which the driver must know how to use and inspect for charge and condition.

The stocked medical kit required on the bus for treating minor injuries until help arrives, checked during pre-trip inspection for completeness.

The driver's use of clear rules, calm communication, and consistent consequences to keep students seated and orderly so the driver can focus on safe driving.

A written record of a student's misconduct on the bus that is sent to school officials or parents so the issue can be addressed through the proper channel.

Repeated aggressive behavior by one student toward another on the bus, which the driver must interrupt, document, and report rather than ignore.

Anything that takes the driver's eyes, hands, or attention away from driving, such as talking on a phone, eating, or dealing with students while the bus is moving.

The space a driver keeps behind the vehicle ahead, which should increase with speed, bad weather, and the heavier weight and longer stopping distance of a bus.

The total distance a bus travels from the moment the driver perceives a hazard until it comes to a complete stop, including reaction and braking distance.

The grip between the bus tires and the road surface, which is reduced by rain, snow, ice, and worn tires and requires slower speeds and gentler inputs.

The additional license classification or endorsement a driver must hold to operate a school bus legally, usually requiring specific knowledge and skills tests.