Instructions

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 four possible answer choices. Test questions come from the Kansas Commercial Driver’s Manual. Questions come from chapters covering: Driving Safely, Cargo, 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 20

Passing Score 16

1. A double or triple:

Is usually able to be driven faster than a straight truck.

Is usually less stable than other smaller commercial vehicles.

Is always easier to drive than other commercial vehicles.

Does not need a special endorsement to be driven.

Double and triple trailers are less stable than single commercial vehicles and are more likely to roll over when being driven. To prevent rollovers, doubles and triples must be driven very smoothly and gently.

2. If federal inspectors judge your vehicle to be unsafe, they can:

Bring you to a garage to have your vehicle fixed.

Formerly request that you have your vehicle's problems fixed.

Call a mechanic.

Pull the vehicle out-of-service until it is fixed.

If a federal or state inspector judges a CMV to be unsafe, they may put it out-of-service until it is fixed.

3. When parked on the side of the road, you should:

Use only the rear flashing lights.

Use one set of turn signals.

Use your high beam headlights.

Use your four-way flashers.

Always turn on your four-way emergency flashers if you must park on the side of the road. This is especially important when traveling at night.

4. If hydraulic brakes fail, a driver can reduce their speed by:

Shifting into a higher gear.

Shifting into a lower gear.

Finding a hill.

Letting the truck run out of gas.

If your hydraulic bakes fail, shifting into a lower gear can help slow your vehicle down.

5. What is off-tracking?

When a vehicle’s front wheels follow a different path than its rear wheels

When a vehicle's wheels all follow the exact same path

When a load shifts during a turn

When a vehicle's wheels run over a curb during a turn

When a vehicle goes around a corner, the rear wheels follow a different path than the front wheels. This is known as off-tracking, or "cheating."

6. A fatigued driver:

Is extra alert.

Should take over-the-counter remedies to wake them up.

May make critical decisions too slowly.

Is usually more conscientious than a typical driver.

If you are fatigued, you will not see or react to hazards as quickly as you would if you were fully energized and awake. You will be impaired in making critical decisions.