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Alabama CDL — General Knowledge practice

Penalties & Licensing

The point system, license suspension, provisional-license rules, insurance requirements, and other licensing basics.

Content reviewed against official driver handbooks · July 7, 2026

20 questions · pass with 16 correct. You get instant feedback and an explanation after every answer.

Study questions with answers

12 sample Penalties & Licensing questions with the correct answer, a short explanation, and the official handbook reference. Read through them, then take the quiz above.

  1. 1. What must a driver do to obtain a CDL or a commercial learner's permit?

    Correct answer: Pass the required knowledge and skills tests

    Both a CLP and a CDL require passing the applicable knowledge tests and skills tests.

    Source: Alabama CDL Manual - Section 1 (Introduction - To Get a CDL or CLP)

  2. 2. Which of these counts as a serious traffic violation for a CDL holder?

    Correct answer: Following another vehicle too closely

    Tailgating, reckless driving, erratic lane changes, and excessive speeding are all listed as serious traffic violations.

    Source: Alabama CDL Manual - Section 1.3.3 (Serious Traffic Violations)

  3. 3. Operating a commercial vehicle is illegal once your blood alcohol concentration reaches what level?

    Correct answer: 0.04 percent

    For commercial drivers the legal threshold is 0.04 percent BAC - half of the common 0.08 limit for regular drivers.

    Source: Alabama CDL Manual - Section 1.3.2 (Alcohol, Leaving the Scene of an Accident, and Commission of a Felony)

  4. 4. What extra federal step is required before a driver can receive a hazardous materials endorsement?

    Correct answer: Fingerprinting and a security background check

    Because of security rules, applicants for the H endorsement must submit fingerprints and pass a background check reviewing criminal, immigration, and FBI records.

    Source: Alabama CDL Manual - Section 1.3.6 (Hazardous Materials Endorsement Background Check and Disqualifications)

  5. 5. If a first alcohol offense happens while the driver is operating a CMV placarded for hazardous materials, the minimum disqualification is:

    Correct answer: At least three years

    The one-year minimum is raised to three years when the offense occurs while hauling placarded hazardous materials.

    Source: Alabama CDL Manual - Section 1.3.2 (Alcohol, Leaving the Scene of an Accident, and Commission of a Felony)

  6. 6. A driver caught with any detectable alcohol below 0.04 percent while operating a CMV will be:

    Correct answer: Placed out of service for 24 hours

    Even an amount under 0.04 percent triggers an out-of-service order lasting 24 hours.

    Source: Alabama CDL Manual - Section 1.3.2 (Alcohol, Leaving the Scene of an Accident, and Commission of a Felony)

  7. 7. How far over the posted limit does the manual treat speeding as a serious traffic violation?

    Correct answer: 15 mph or more above the limit

    Excessive speeding is defined as traveling 15 mph or more over the posted speed limit.

    Source: Alabama CDL Manual - Section 1.3.3 (Serious Traffic Violations)

  8. 8. Which vehicle is placed in Group A (Class A) for licensing purposes?

    Correct answer: A combination rated 26,001 pounds or more that tows a unit rated above 10,000 pounds

    Group A covers combinations with a combined rating of at least 26,001 pounds where the towed unit(s) exceed 10,000 pounds.

    Source: Alabama CDL Manual - Section 1 (Introduction - CDL Classifications)

  9. 9. Which endorsement must a driver add to carry more than the placardable amount of hazardous materials?

    Correct answer: The H (hazardous materials) endorsement

    Hauling any load large enough to require hazardous-materials placards means the driver must obtain the H endorsement after passing a special written test.

    Source: Alabama CDL Manual - Section 1 (Introduction - CDL Endorsements)

  10. 10. Committing two serious traffic violations in a CMV inside a three-year span costs the driver the CDL for a minimum of:

    Correct answer: 60 days

    A second serious traffic violation inside three years brings a disqualification of at least 60 days.

    Source: Alabama CDL Manual - Section 1.3.3 (Serious Traffic Violations)

  11. 11. A driver who skips or does not pass the air-brake portion of the test receives which restriction?

    Correct answer: A restriction against operating any air-brake-equipped CMV

    Failing or skipping the air brake component adds the L restriction, prohibiting operation of a vehicle with air brakes.

    Source: Alabama CDL Manual - Section 1 (Introduction - Restrictions)

  12. 12. A straight truck rated at 26,001 pounds or more that tows nothing over 10,000 pounds belongs to which group?

    Correct answer: Group B

    Group B is made up of heavy single vehicles rated 26,001 pounds or more, including large straight trucks and big buses.

    Source: Alabama CDL Manual - Section 1 (Introduction - CDL Classifications)

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Every Alabama question is written from the official Alabama driver handbook and checked against its current edition. DMV Test Free is a free, independent study resource — not affiliated with any DMV or government agency. About DMV Test Free