Double

This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice.. Read More

This endorsement is required if the driver will pull two or three trailers. 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 Kentucky Commercial Driver License Manual. Questions come from chapters covering: Driving Safely, Air Brakes (if applicable), Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.

Number of Question
Passing Score

8. A Class 1 hazardous material is:

Explanation
Explosives are placed in hazardous materials Class 1.

9. When conducting a pre-drive inspection:

Explanation
The first step of a vehicle inspection is to review the last vehicle inspection report. Only sign the report if noted defects are certified to have been repaired.

10. When driving a triple on a mountainous road, you:

Explanation
Drivers of doubles and triples should be especially careful when traveling on mountainous terrain. Compared to the axles of a single vehicle, the drive axles on a double or triple will be pulling additional length and weight and may be prone to skidding or loss of traction.

11. Scan the road ____ ahead of your vehicle.

Explanation
Good drivers scan the road at least 12 to 15 seconds ahead of their vehicles. Looking ahead will allow you to identify and react to hazards before meeting them. Be sure to specifically look for vehicles that are coming onto the highway, entering into your lane, or turning.

12. When approaching a vehicle for a pre-trip inspection, a driver should look under the vehicle:

Explanation
When approaching your vehicle before an inspection, make note of its general condition and ensure that it is not damaged or leaning. Look under the vehicle for fresh leaks of oil, grease, or fuel. Check around the vehicle for hazards to movement, such as people, other vehicles, or low-hanging wires or tree limbs.

13. When driving, how can you maintain alertness?

Explanation
Strategies to avoid becoming fatigued while driving include keeping the cab cool inside by using the air conditioner or opening a window; avoiding heavy foods; and taking rest breaks about every two hours or 100 miles.

14. Dual tires should:

Explanation
When inspecting a vehicle, you should verify that your dual tires do not come into contact with one another, or with any other part of the vehicle.
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