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Alabama CDL DMV Endorsement Tank 1

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1. A tank usually has:
A low center of gravity.
A high center of gravity.
An extra set of brakes.

Driving tanks requires special care because they usually have high centers of gravity. The driver should also expect cargo movement in transit, if transporting liquid cargo.

2. Portable tanks:
Cannot be removed from a vehicle.
Are not permanently attached to a vehicle.
Are permanently attached to a vehicle.
Should not be used.

Cargo tanks remain on a vehicle at all times, regardless of whether or not they are carrying cargo. Portable tanks are bulk packaging and are not permanently attached to a vehicle.

3. How can a driver maintain alertness while driving?
Stay fit and healthy
Keep the cab warm
Eat heavy foods

Eating heavy foods before driving or keeping the temperature in a cab too high can cause a driver to become drowsy while behind the wheel. Exercising and maintaining a healthy diet will help a driver to stay alert while driving.

4. One way to prevent a rollover is to:
Move cargo to the left side of the rig.
Keep cargo centered on the rig.
Move cargo to the right side of the rig.
Keep cargo as far from the ground as possible.

A rollover is more likely if cargo is unevenly loaded in a rig. To help prevent a dangerous rollover, it is important to keep a load as centered on the rig as possible.

5. Identification numbers, shipping names, and hazard classes:
Should be abbreviated on a shipping paper if a small piece of paper is being used.
Should be abbreviated on a shipping paper to make them easier to read.
Should not be abbreviated on a shipping paper.
Should only be abbreviated on a shipping paper if the abbreviations are easy to understand.

Identification numbers, shipping names, and hazard classes must never be abbreviated when listed on a shipping paper. The only exception to this is if the abbreviation is specifically authorized in the hazardous materials regulations.

6. A cargo van is:
Usually the same height with or without a load.
Usually taller with a heavy load than with a light load.
Usually shorter with a heavy load than with a light load.

The added weight of a heavy load will make a vehicle sit lower than usual. A vehicle will often be taller when carrying a light load than when carrying a heavy load. If your vehicle fits under an overpass while carrying a full load, it is not guaranteed that it will fit under the same overpass if it is empty.

7. Who must label hazardous materials?
The shipper
The loader
The driver
The mechanic

The shipper of hazardous materials is responsible for packaging, marking, and labeling the materials. They must supply any necessary placards.

8. The emergency air line supplies air to the:
Relay valves.
Trailer air tanks.
Signal line.

The emergency air line (also known as the supply line) has two functions. The first is to supply air to the trailer air tanks, and the second is to control the emergency brakes on combination vehicles.

9. When loading liquid cargo, you should take into account:
The weight of the liquid.
The color of the cargo.
The air pressure in the tires.
The speed limits on the route.

Factors that affect how much liquid is safe to load into your tank include how much the liquid will expand in transit, the weight of the liquid, and legal weight limits.

10. Older trailers are not equipped with spring brakes. This means that if the air supply for a vehicle's air braking system leaks away:
The trailer will stop normally.
The trailer will not have brakes.
The trailer will speed up.

Older trailers do not have spring brakes. This means that if the air supply in an older trailer's air tank has leaked away, there will be no working brakes connected to the trailer and its wheels will turn freely.

11. ____ identical placards must be placed on a vehicle transporting hazardous materials.

When hazardous materials placards are required, they must be placed on all four sides of the transporting vehicle.

12. Having ABS on only one axle:
Does not change braking in any way.
Is not possible.
Will allow the driver additional control over their vehicle when braking.
Will cause extra strain on the other axles.

Having an Anti-Lock Braking System (ABS) on only the trailer, or even on just one axle, will still provide a driver with additional control over the trailer when braking.

13. When turning, when should the turn signal be canceled?
Before entering the turn
During the turn
After the turn is completed

Always signal continuously through a turn. Do not cancel a signal until the turn is finished.

14. When driving a tank:
Curves should be taken faster than the posted speed limit.
Curves should be taken more slowly than the posted speed limit.
If there are two lanes of traffic, the tank should use both lanes.

Tank vehicles have a high centers of gravity and are therefore particularly vulnerable to rollover. To lower this risk, tank vehicles should be driven well below the posted speed limit on curves.

15. Roads are slippery when it first begins to rain because:
Water is slippery.
The fresh rain mixes with oil on the roadway.
The water has nowhere to go.
Concrete can be slippery.

Roads are especially slippery when it first begins to rain. Rain water initially mixes with oil and grease on the road to form a slippery film. As the rain continues, this mixture will eventually wash away.

16. If you are turning left and there are two available left turn lanes, which lane should you choose?
The left lane
The right lane
Either lane
Trucks should not turn where there are two left turn lanes.

A large vehicle may need to swing right to make a left turn. If an intersection has two left turn lanes, the driver should choose the righthand land to begin their turn.

17. To check the automatic transmission fluid level in some vehicles, you will have to:
Park your vehicle uphill.
Park your vehicle downhill.
Leave the vehicle running.

In some vehicles, it may be necessary to leave the engine running when checking the automatic transmission fluid level.

18. When driving a vehicle equipped with an Anti-Lock Braking System (ABS), you should:
Stop harder than you would in a vehicle not equipped with ABS.
Use extra braking force to ensure the ABS kicks in.
Brake as you would in a vehicle not equipped with ABS.
Brake with less force than you would in a vehicle not equipped with ABS.

When driving a tractor-trailer combination that is equipped with an Anti-Lock Braking System (ABS), you should brake in the same manner that you would if the vehicle was not equipped with ABS.

19. Broken suspension parts:
Should be repaired immediately.
Should be repaired, but not immediately.
Cannot be identified.

The suspension system performs the vital functions of holding up the vehicle and its load while keeping the axles in place. Defects in the suspension are therefore extremely dangerous.

20. An Anti-Lock Braking System (ABS):
Allows wheels to lock up.
Prevents wheels from locking up.
Makes it easier to turn a large vehicle.
Assists with the operation of brake lights.

The function of an Anti-Lock Braking System (ABS) is to prevent a vehicle's wheels from locking up during hard braking.

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