Bus

This endorsement is required for driving a school bus. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice.. Read More

This endorsement is required for driving a school bus. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. To pass, the applicant must answer at least 16 questions correctly. Each question has three possible answer choices. Test questions come from the Iowa Commercial Driver License Manual. Questions come from chapters covering School Buses, Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving. The School Bus endorsement can be used with the Class A, B or C CDL.

Number of Question
Passing Score

1. The overhead inside rearview mirror should be positioned to show:

Explanation
The top portion of the overhead inside rearview mirror should be positioned to display the top of the bus's rear window. This mirror positioning should allow the driver to see all of the students on the bus, including the heads of the students sitting immediately behind the driver.

2. ABS helps you:

Explanation
The function of an Anti-Lock Braking System (ABS) is to prevent a vehicle's wheels from locking up when the driver brakes hard on a slippery surface.

3. Bus stops may be changed by:

Explanation
Official school bus routes and stops are established by the local school district. Drivers should never change a stop location without the written approval of an appropriate district official.

4. The overhead rearview mirror is located:

Explanation
On a school bus, the overhead inside rearview mirror is mounted directly above the windshield on the driver’s side of the bus. This mirror should be used to monitor students inside the bus.

5. During the driving test, when encountering a railroad crossing, you should:

Explanation
During the on-road driving test, do not stop, change gears, pass another vehicle, or change lanes while any part of your vehicle is in a railroad crossing.

6. If you must drive during periods of high winds, you should:

Explanation
A school bus's long sides are vulnerable to being pushed by winds. If you must drive in windy conditions, you should maintain a strong grip on the steering wheel, try to anticipate wind gusts, and slow down. If necessary, contact your dispatcher for instructions on how to proceed.

7. During a basic vehicle controls skills test exercise, your vehicle's final position should be:

Explanation
You should finish each exercise with your vehicle in the exact position described by the examiner. You can be penalized for failing to complete an exercise exactly in the manner described by the examiner, potentially resulting in failure of the basic control skills test.
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