Instructions

Tank

This endorsement is required to haul any liquid or gaseous materials in a tank or tanks having a capacity of 1,000 gallons or more that is either permanently or temporarily attached to the vehicle or chassis. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. Each question has two, three or four possible answer choices. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the Utah Commercial Driver License Handbook. Questions come from chapters covering: Driving Safely, Tank Vehicles, Hazardous Materials and Combination Vehicles. The Tank endorsement can be used with the Class A, B or C CDL.

Number of Question 20

Passing Score 16

1. A trolley valve:

Should be used while driving.

Should only be used to test trailer brakes.

Should be used when parking uphill.

The trailer hand valve (also referred to as the trolley valve or Johnson bar) is a mechanism that works the trailer brakes. It should only be used to test the brakes. Using it while the vehicle is being driven could cause a skid. Never use the trailer hand valve while parking because doing so may release the air pressure from the braking system, releasing the brakes that are holding the vehicle in place.

2. Belts in the engine compartment should be:

Frayed.

Tight.

Greasy.

Easy to slide off.

When inspecting your vehicle's engine, check the belts for tightness and excessive wear. The amount of "give" that is safe for each belt in a given engine will vary, so learn what is appropriate for your vehicle.

3. When backing with a trailer:

You should not back up in a straight line.

You should not correct drift until you are very far off course.

You should pull up to reposition the vehicle as needed.

You should avoid braking.

When backing with a trailer, you should pull up to reposition your vehicle as needed.

4. When carrying Division 1.1, 1.2, or 1.3 explosives, your vehicle should not be:

Parked within 300 feet of a bridge.

Parked within 40 feet of the road.

Driven in rain or snow.

Except when parking briefly to perform necessary functions for vehicle operation (such as refueling), never park a vehicle carrying Division 1.1, 1.2, or 1.3 explosives within 300 feet of a bridge, tunnel, or building. Never park such a vehicle within five feet of the traveled portion of the road.

5. Stopping distance can be affected by:

Speed.

Engine oil.

Time of day.

Traffic.

Factors that can affect stopping distance include your vehicle's speed, its weight, and the traction provided by the road surface.

6. While driving:

Creating a text is not permitted, but reading a text is.

Creating a text is permitted, but reading a text is not.

Neither creating nor reading a text is permitted.

Texting while driving a CMV is prohibited. "Texting" is defined as manually entering text into, or reading text from, an electronic device.

7. If the brakes “pull” to one side or the other when you use them, it's a sign that:

The brakes are working properly.

The brakes need to be checked.

The brakes are new.

The brakes have too much stopping power.

If your vehicle "pulls" to one side when braking, you may have brake trouble. If there is an issue with your brakes, you should fix the issue before driving. Operating an unsafe vehicle is against federal and state laws.

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