Directions: 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 three or four possible answer choices. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the Alabama Commercial Driver License Manual. 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.

Once every year.
Prior to every CDL renewal.
Once every 10 years.
Only once.

Get out of your vehicle and walk around the area to become more familiar with it.
Not use both mirrors, as that can cause too much distraction.
Wait for someone else to back up in the area so you see how they do it.
Turn on your high beam headlights.

Supply air to the trailer.
Chock the wheels.
Inspect the fifth wheel.
Connect the electrical cord.

Alabama CDL Permit Test - Tank

The National Response Center must be notified of an incident resulting in any of the following, except:

When driving on a wet road, you should reduce your speed by:

A driver must take the HazMat knowledge test:

When it’s difficult to see, such as at dawn or dusk, a driver can increase their vehicle's visibility by:

If you’re unfamiliar with the area in which you must back up, you should:

After connecting the air lines to the trailer while coupling, you should:

Place the trailer air supply control in its "emergency" position to test:

Number of questions:	20
Passing score:	16

Death.
Injury requiring hospitalization.
Injury not requiring hospitalization.

About one-half.
About one-third.
About one-quarter.

Driving while using their lights.
Driving with their windows open.
Flashing their lights periodically.