AL DMV Commercial Driver's License 2

Question 1

In Alabama, what is the minimum age to obtain a CDL for interstate commerce?

Accepted Answer

21 years old

Answer

Drivers must be at least 21 to operate a commercial vehicle across state lines, though 18-year-olds may drive intrastate.

Question 2

A Class A CDL is required to operate a combination vehicle with a GCWR of 26,001 pounds or more when the towed unit weighs more than how much?

Accepted Answer

10,000 pounds

Answer

Class A applies when the towed unit exceeds 10,000 pounds GVWR and the combination exceeds 26,001 pounds GCWR.

Question 3

When performing a pre-trip inspection, what should tire tread depth be on the front (steering) tires?

Accepted Answer

At least 4/32 inch

Answer

Front steering tires must have at least 4/32-inch tread depth, while other tires need at least 2/32 inch.

Question 4

What is the maximum blood alcohol concentration (BAC) allowed for a CDL holder operating a commercial motor vehicle?

Accepted Answer

0.04%

Answer

CDL holders are held to a stricter 0.04% BAC limit while operating a commercial motor vehicle, half the standard limit.

Question 5

If you are convicted of a first offense of driving a CMV under the influence, how long will your CDL be disqualified?

Accepted Answer

1 year

Answer

A first DUI conviction in a CMV results in a one-year CDL disqualification, or three years if hauling hazardous materials.

(AL DMV) Alabama Department of Motor Vehicle Practice Test