Choosing CDL Classes for Real Vehicles — Applied Knowledge

Build confidence with 10 original questions about Choosing CDL Classes for Real Vehicles — Applied Knowledge. Review your answers and explanations after finishing.

Supplemental study practice. This is not a government licensing exam or ELDT certification, and does not replace hands-on training. Follow your state’s current handbook.

1 / 10

A driver already holds the appropriate Class B CDL and P endorsement. Their new assignment is a school bus with a GVWR of 28,000 pounds. What additional endorsement is needed?

T — Double/triple trailers

N — Tank vehicle

H — Hazardous materials

S — School bus

2 / 10

A driver with a Class C CDL is assigned to transport a small quantity of a select agent or toxin listed in 42 CFR Part 73. What is required before transporting this material?

Hazardous materials endorsement

Passenger endorsement

Tank vehicle endorsement

No endorsement is needed

3 / 10

A driver with a Class A CDL takes the passenger endorsement skills test in a Class B vehicle. What restriction will be added to their license?

M – Only Class B and C passenger vehicles

O – No fifth wheel connection

N – Only Class C passenger vehicles

E – No manual transmission

4 / 10

A driver with a Class B CDL wants to operate a vehicle carrying hazardous materials that require placards. What must the driver obtain before transporting this load?

Hazardous materials endorsement

No additional endorsement is needed

Tank vehicle endorsement

Double/triple trailers endorsement

5 / 10

You are assigned to drive a single vehicle with a GVWR of 27,500 pounds and tow a trailer with a GVWR of 7,000 pounds. What is the lowest CDL class you need?

Class A

Class C

No CDL required

Class B

6 / 10

A driver wants to transport 18 passengers, including themselves, in a shuttle bus with a GVWR of 18,000 pounds. Which CDL class and endorsement are required?

Class B with a school bus endorsement

Class A with a hazardous materials endorsement

Class C with a tank vehicle endorsement

Class C with a passenger endorsement

7 / 10

A driver with a Class A CDL takes the skills test in a vehicle with a pintle hook connection instead of a fifth wheel. What restriction will be placed on their license?

O – No fifth wheel connection

L – No full air brake

E – No manual transmission

M – Only Class B and C passenger vehicles

8 / 10

A driver plans to operate a tank vehicle that previously carried hazardous materials but has not been purged of residue. Which of the following is true for a Commercial Learner’s Permit (CLP) holder with a tank endorsement?

They may operate the tank vehicle if it is empty

They are prohibited from operating the tank vehicle until it is purged

They may operate the tank vehicle with a supervisor

They may operate the tank vehicle if it is not placarded

9 / 10

A driver plans to operate a truck with a gross combination weight rating (GCWR) of 28,000 pounds, towing a trailer with a gross vehicle weight rating (GVWR) of 12,000 pounds. Which CDL class is required for this vehicle combination?

Class B

Class C

No CDL required

Class A

10 / 10

A driver takes the skills test for a Class A CDL in a truck with an automatic transmission. What restriction will be placed on their CDL?

E – No manual transmission

L – No full air brake

M – Only Class B and C passenger vehicles

O – No fifth wheel connection

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