Six children were waiting, but you counted five boarding. What is the correct response?
Correct answer: Account for the missing child before moving.
Count students and know where each one is. Ask about a missing child and, if necessary, secure the bus and physically check around and underneath before moving.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 10.2.2 (July 2017); physical PDF page 124 (printed 10-4); reviewed September 15, 2026. ↗
Everyone you first saw at the stop is seated. Why check the mirrors again before departure?
Correct answer: A late-arriving child may now be approaching the bus.
Children may run toward a bus after the original group boards. Make the final exterior checks before returning safely to traffic.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 10.2.2 (July 2017); physical PDF page 124 (printed 10-4); reviewed September 15, 2026. ↗
When are newly boarded students ready for the bus to depart?
Correct answer: When they are seated and facing forward.
Wait until students are seated and facing forward, then complete the exterior and traffic checks. A clear stairwell alone does not mean they are safely settled.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 10.2.2 (July 2017); physical PDF page 124 (printed 10-4); reviewed September 15, 2026. ↗
At a drop-off stop, when should students leave their seats?
Correct answer: After the driver tells them to unload.
Students stay seated until the driver releases them to unload. The driver counts them off and verifies that each has moved to a safe, visible position.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 10.2.3 (July 2017); physical PDF page 124 (printed 10-4); reviewed September 15, 2026. ↗
A student drops a notebook close to a bus wheel. What should the student do?
Correct answer: Leave it and get the driver's attention from a safe place.
Teach students not to retrieve objects near or under the bus. They should move to safety and alert the driver so the situation can be handled with the bus secured.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 10.2.5 (July 2017); physical PDF page 125 (printed 10-5); reviewed September 15, 2026. ↗
Why watch a student's clothing and backpack while the student steps off?
Correct answer: They can catch on the handrail or door area.
Loose straps or clothing can snag during exit. Watch each student clear the doorway and reach a safe location before departure.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 10.2.5 (July 2017); physical PDF page 125 (printed 10-5); reviewed September 15, 2026. ↗
Before crossing in front of the bus, where should a student wait for the driver's signal?
Correct answer: At the right edge, far enough ahead for the driver to see their feet.
The handbook teaches moving at least 10 feet ahead to a visible position at the right edge of the roadway. Students check traffic and wait for the driver's signal; local crossing procedures also apply.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 10.2.3 (July 2017); physical PDF page 125 (printed 10-5); reviewed September 15, 2026. The ten-foot approach begins on physical page 124 (printed 10-4). ↗
A student has crossed in front of the bus to its left edge. What comes next?
Correct answer: Stop, check traffic and confirm it is safe to continue.
The bus can hide approaching traffic. At its left edge the student makes another traffic check and follows the driver's crossing signal before continuing.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 10.2.3 (July 2017); physical PDF page 125 (printed 10-5); reviewed September 15, 2026. ↗
One unloading student is no longer visible and you cannot account for them. What should you do?
Correct answer: Secure the bus, take the key and check around and underneath.
Do not move until every student is accounted for. When an outside check is needed, secure the bus and take the key before leaving the driving compartment.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 10.2.3 (July 2017); physical PDF page 124 (printed 10-4); reviewed September 15, 2026. ↗
You have driven past a student's assigned stop. What should you do?
Correct answer: Follow the authorized missed-stop procedure without backing to it.
The handbook directs drivers not to back after missing a stop. Follow local procedures to arrange a safe, authorized drop-off.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 10.2.3 (July 2017); physical PDF page 124 (printed 10-4); reviewed September 15, 2026. ↗
On a Missouri highway with four or more traffic lanes, may a student stop require passengers to cross three lanes?
Correct answer: No; passengers must not be required to cross more than two lanes.
The restriction applies to highways with four or more lanes, with or without a median or barrier. Plan loading and unloading so passengers are not required to cross more than two traffic lanes.
Source: Missouri Revised Statutes 304.050.5, current Revisor text checked September 15, 2026. ↗
A Missouri highway has no shoulder and a posted speed limit above 60 mph. How far in each direction must a school bus stopped on the highway be plainly visible?
Correct answer: At least 500 feet.
This no-shoulder, over-60-mph case requires 500 feet of visibility in each direction. The statute specifies at least 300 feet on other highways.
Source: Missouri Revised Statutes 304.050.5, current Revisor text checked September 15, 2026. ↗
A district authorizes off-road loading on a divided highway with four or more lanes. Nobody crosses a traffic lane. Which condition belongs to Missouri's exception to the stop signal?
Correct answer: Emergency flashing signals warn passing drivers to proceed cautiously.
A district policy may allow the bus to pull off the main roadway and load or unload without signaling other drivers to stop. No passenger may need to cross a traffic lane, and emergency flashing signals must indicate caution. This is not a general lift-passenger exception.
Source: Missouri Revised Statutes 304.050.4, current Revisor text checked September 15, 2026. ↗
Must an empty Missouri school bus stop at a railroad grade crossing that has no applicable stopping exception?
Correct answer: Yes, whether students are aboard or not.
Missouri's rule applies to every school bus, not just one currently carrying students. At a non-exempt crossing, make the required stop and confirm it is safe to proceed.
Source: Missouri Revised Statutes 304.030, current Revisor text checked September 15, 2026. ↗
At a Missouri railroad crossing where your school bus must stop, where should its front stop relative to the nearest rail?
Correct answer: Between 15 and 50 feet away.
Missouri requires a full stop no closer than 15 feet and no farther than 50 feet from the nearest rail where no exception applies. Do not proceed until due caution establishes that the crossing is clear.
Source: Missouri Revised Statutes 304.030, current Revisor text checked September 15, 2026. ↗
What does the CDL handbook recommend for hazard lights when approaching a school-bus railroad crossing?
Correct answer: Activate them approximately 200 feet before the crossing.
The handbook recommends approximately 200 feet to warn following traffic of the stop. This railroad approach advice is distinct from Missouri's 500-foot amber-light requirement at designated student stops.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 10.4.3 (July 2017); physical PDF page 128 (printed 10-8); reviewed September 15, 2026. ↗
