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.. Read More

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 Maryland Commercial Driver Guide. 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
Passing Score

8. Maintaining a cushion of space between your vehicle and the vehicle ahead is:

Explanation
For safe driving, it is essential that you maintain cushions of space on all sides of your vehicle. This helps to ensure that you will have time to take appropriate action if a problem arises.

9. A placard indicating hazardous materials is shaped like a:

Explanation
Hazardous materials warning placards are diamond-shaped.

10. If one-fourth of the leaves in a leaf spring are missing when a vehicle is inspected:

Explanation
When inspecting a vehicle's suspension, you should look for broken or missing leaves in the leaf springs. Any defect of this kind is dangerous. If one-fourth or more of the leaves are missing from any leaf spring, the vehicle must be put out-of-service.

11. When a tank that is divided by bulkheads is being loaded with liquid cargo:

Explanation
When filling a tank that is divided by bulkheads, make sure that you do not place too much weight on the front or rear of the vehicle.

12. A stopped bus:

Explanation
Always drive cautiously around a stopped bus. Passengers may cross in front of or behind it, and the bus may prevent them from seeing your vehicle.

13. When driving a tank vehicle, a highway curve should be taken:

Explanation
Tank vehicles' high centers of gravity make them vulnerable to rollover. To reduce this risk, they should be driven well below the posted speed limits on curves and ramps.

14. When starting a vehicle, warning lights and buzzers:

Explanation
After starting a vehicle's engine, the warning lights and buzzers should turn on, then quickly turn off.
DMV Writen Test Logo