South Dakota School Bus CDL Practice Test

This is a free 20-question practice test for the School Bus portion of the South Dakota Commercial Driver's License knowledge exam. Questions are pulled from a pool of 55 drawn from the AAMVA CDL Manual, which is the source document the South Dakota Driver Licensing Program uses to write its actual exam.

How it works: Click an answer. The correct choice highlights in green, and you'll see a short explanation. Aim for 85% or better before you sit for the real test in South Dakota.

Question 1 of 20

Pre-trip inspection of a school bus should include:

All standard items plus emergency exits, signaling devices (red and amber lights, stop arm, crossing-control arm), wheelchair lift if equipped, first-aid kit, fire extinguisher, body fluid clean-up kit
Only the engine
Only the brakes
Only the seating

Correct. Standard CMV inspection plus school-bus-specific equipment: lights, stop arm, crossing arm, lift, kits, mirror condition.

Question 2 of 20

When approaching the bus stop, you should activate the alternating amber warning lights:

About 200 feet in advance (more in 50+ mph zones)
At the stop
After unloading
Only at night

Correct. Activate amber warning lights about 200 feet before the stop (further in higher-speed zones), giving traffic time to slow.

Question 3 of 20

When backing a school bus, you should:

Avoid backing whenever possible; if you must back, use a helper, sound the horn, never back across a roadway, never back with students aboard if avoidable
Back at full speed
Back with no warning
Back across roadways

Correct. Backing in a school bus is the highest-risk maneuver. Avoid it. If required, use a helper, sound the horn, do not back across roadways, and ideally do not back with students aboard.

Question 4 of 20

During the loading process, students should:

Wait at the bus stop until the bus has fully stopped and the door is opened
Approach while the bus is moving
Cross before the bus stops
Run to the bus

Correct. Students wait until the bus has fully stopped, the parking brake is set, the door is opened, and the driver signals before approaching.

Question 5 of 20

The "danger zone" around a school bus is generally:

10 feet in front, on each side, and behind the bus, plus any area required for the bus to maneuver
Only behind the bus
Only in front
5 feet on each side

Correct. The danger zone extends 10 feet in front, 10 feet on each side, and 10 feet behind the bus, plus the area needed to maneuver. Most students killed by their own bus are in this zone.

Question 6 of 20

A school bus must stop at every railroad crossing:

Yes, with limited exceptions
No, never
Only if a train is in sight
Only at night

Correct. School buses must stop at every railroad crossing 15 to 50 feet from the nearest rail. Open the entrance door and driver window, look and listen, then proceed without shifting gears.

Question 7 of 20

When loading students at the stop, the driver should:

Account for every student, watch for late students from nearby houses, count and recount
Just open the door
Skip the count
Move quickly

Correct. Count students before, during, and after loading. Late students may approach in your blind spot.

Question 8 of 20

A school bus evacuation is required when:

Fire is on or in the bus, the bus is in danger of fire (downed wires, fuel spill), the bus is on or near tracks, the bus is in path of a train, or the bus is in danger of being hit
Only when the bus is empty
Only at night
Only after a flat tire

Correct. Evacuate for fire, danger of fire, on/near railroad tracks, in path of a train, or danger of being hit by another vehicle.

Question 9 of 20

When loading wheelchair students:

Use the lift correctly, secure the wheelchair with 4-point tie-downs, use occupant restraints, ensure the lift is fully stowed before moving
Skip securement
Drive without securing
Use 1 tie-down

Correct. 4-point tie-down for the chair plus occupant lap and shoulder restraints. Verify lift stowed before moving.

Question 10 of 20

The minimum distance the front bumper of a stopped school bus should be from waiting students at the stop:

At least 10 feet
As close as possible
At least 1 foot
At least 50 feet

Correct. Stop with the front bumper at least 10 feet from waiting students so they have to walk forward to enter the bus, ensuring the driver can see them.

Question 11 of 20

Speed limits in school zones apply to a school bus driver:

As they apply to all drivers — sometimes lower than posted highway limit
Do not apply to school buses
Are higher for buses
Are decorative

Correct. School-zone limits apply to school-bus operators just as to other drivers; observe posted reduced limits when in effect.

Question 12 of 20

After unloading at the end of the route, the driver must:

Walk through the bus to check for sleeping or hiding students, lost items, damage
Skip the walkthrough
Lock and leave
Only check the front

Correct. Always walk every aisle and check every seat. Sleeping children left aboard a parked bus is a recurring tragedy that the post-trip walk prevents.

Question 13 of 20

When evacuating students, they should be moved to a safe area:

At least 100 feet off the roadway in the direction of oncoming traffic, away from the bus
Right next to the bus
Across the road
Anywhere

Correct. Move students at least 100 feet away, off the roadway, in the direction of oncoming traffic so they can see and be seen by approaching drivers.

Question 14 of 20

You see a student running back toward the bus after being unloaded. You should:

Wait until the student is clear, account for them, before moving
Continue moving
Honk and accelerate
Open the door while moving

Correct. Stop and account for the student. Many fatal incidents involve students returning for forgotten items in the danger zone.

Question 15 of 20

If you must evacuate students through the rear emergency exit:

Have a responsible older student or adult outside to assist others as they exit, maintain orderly evacuation
Throw them out
Skip the rear exit
Only use the front

Correct. Position helpers at exits to assist. Maintain orderly process. Account for all students at the safe area.

Question 16 of 20

When you approach a railroad crossing in a school bus, you must stop:

Between 15 and 50 feet from the nearest rail
On the tracks
100 feet ahead
Anywhere within 200 feet

Correct. Stop 15 to 50 feet from the nearest rail, open door and driver window, look and listen, then proceed without shifting gears.

Question 17 of 20

Securing the bus at the end of the day:

Park in designated area, set parking brake, turn off engine and lights, secure all doors
Leave the engine running
Skip the parking brake
Leave doors unlocked

Correct. Standard end-of-day securement: parking, brake, engine off, lights off, doors secured. Walk through to ensure no children remain.

Question 18 of 20

A school bus must have how many mirrors at minimum?

Standard side mirrors plus crossover mirrors that allow the driver to see the danger zone in front and on the right side
Just one
Just two
None

Correct. School buses have side mirrors plus crossover mirrors at the front so the driver can see the danger zone in front of the bus and on the right.

Question 19 of 20

When a bus is in motion, students must:

Remain seated, facing forward, not block the aisle
Stand
Move around
Sit on the floor

Correct. Seated, facing forward, hands and feet to themselves, aisle clear. This protects them in any sudden stop.

Question 20 of 20

The school bus stop arm:

Extends to signal traffic to stop while children load or unload
Is decorative
Is for parking
Is optional

Correct. The stop arm signals approaching traffic to stop. Drivers who pass a stopped school bus with red lights flashing face heavy fines.

About the South Dakota School Bus exam

Most states administer 20 School Bus questions and require 80% to pass. The exam emphasizes loading and unloading procedures, the danger zone around the bus, emergency exit and evacuation procedures, railroad-highway crossings, and student management.

The South Dakota Driver Licensing Program follows the federal CDL standards established by FMCSA. To earn the School Bus credential, you must answer at least 80% of the questions correctly. Many candidates score lower the first time because the test pulls from a large pool — refreshing this page will give you a different mix of questions, drawn from the same authoritative source.

Want more practice? Try the full School Bus question bank or browse all South Dakota CDL practice tests.