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. Test questions come from the Michigan 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 20

Passing Score 16

1. Alcohol can be removed from your system:

By exercising.

By drinking coffee.

By waiting.

The liver removes alcohol from the body at a fixed rate, so the only way to sober up after consuming alcohol is to allow your body time to remove the alcohol on its own.

2. Operating combination vehicles usually requires ____ operating single vehicles.

Less skill than

About the same level of skill as

More skill than

Combination vehicles are usually heavier and longer than single combination vehicles. Operating a combination vehicle requires a higher level of driving skill than operating a single commercial vehicle.

3. If you must drive in reverse, using driver's side backing:

Is always encouraged.

Is discouraged.

Is only recommended if it is raining.

If you must back up, it is safest to back toward the driver's side of the vehicle. This way, as the driver, you will have the best possible view of your path of travel.

4. When traveling down a steep grade, you switch into a lower gear:

Before beginning the grade.

When you have already started the grade.

As far down the grade as possible.

You should shift your vehicle's transmission into a low gear before staring a downhill grade. Be prepared for gravity to increase your vehicle's speed when traveling downhill.

5. When backing with a trailer, turning toward the driver’s side is encouraged because:

The driver will have the best possible view.

Power lines should be on the passenger's side.

Other drivers can offer assistance on the passenger's side.

When driving in reverse, it is always recommended that a driver backs their vehicle toward its left side. This will allow the driver the best possible view of the rear of their vehicle.

6. If approaching a vehicle with a distracted driver, you should:

Quickly pass the vehicle.

Maintain a safe distance from the vehicle.

Closely follow the vehicle.

If you see a distracted driver, give them plenty of space and maintain a safe following distance.

7. Dual tires should:

Always come into contact with one another.

Come into contact with one another fairly regularly.

Not come into contact with one another.

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.

Grade This Section

Search the best driving school in your neighbourhood

Finding a quality driving school in Michigan can be a difficult and time consuming task. driving-schools.com comprehensive database of driving schools helps you pick one that’s right for you.