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 or four possible answer choices. Test questions come from the Mississippi Professional Driver’s Manual. Questions come from chapters covering: Passengers, School Buses, Cargo, Air Brakes, 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

8. The emergency brake system uses:

Explanation
In an air brake system, there are three different braking systems: a service brake system, a parking brake system, and an emergency brake system. The emergency brake system uses parts of both the parking and service brake systems.

9. Properly adjusted outside mirrors should allow a bus operator to see how far behind their bus?

Explanation
The left and right side flat mirrors on the outside of a school bus should be adjusted so that the driver can see 200 feet (or four bus lengths) behind the bus.

10. The line that passengers must stand behind is called:

Explanation
On a bus designed to carry standing passengers, no passengers may stand in front of the rear of the driver's seat. Any such bus must have a line on the floor, or some other marking, that indicates where passengers may not stand. This is called a standee line.

11. How many classes of hazardous materials are there?

Explanation
A hazardous material will be placed into one of nine classes to explain the type of risks associated with the material.

12. When the brake pedal is pushed down, air brakes work:

Explanation
Because air takes time to flow through the air lines to the brakes, air brakes cannot begin working instantly. There is often a brake lag of at least one-half of a second between the moment the brake pedal is pressed and the moment the brakes begin to work.

13. ABS allows you to:

Explanation
Anti-Lock Braking Systems (ABS) help prevent brake lockup when driving on slippery surfaces. If a driver brakes too hard on a slippery surface, ABS makes it easier for the driver to maintain control of their vehicle. A vehicle equipped with ABS should be driven and braked in the same way as a vehicle without ABS.

14. During a vehicle inspection, ensure that lug nuts are all of the following, except:

Explanation
During a vehicle inspection test, you must ensure that all lug nuts are present, free of cracks and distortions, and showing no signs of looseness, such as rust trails or shiny threads. Verify that all bolt holes are free of cracks and distortions.
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