Alabama CDL — General Knowledge practice
Alabama CDL — General Knowledge: Penalties & Licensing practice test
The point system, license suspension, provisional-license rules, insurance requirements, and other licensing basics.
Content reviewed against official driver handbooks · August 12, 2026
20 questions · pass with 16 correct. You get instant feedback and an explanation after every answer.
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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.
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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. 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. 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.
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.
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.
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.
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. 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. 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. 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. 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. 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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