Maryland CDL — General Knowledge practice
Penalties & Licensing
The point system, license suspension, provisional-license rules, insurance requirements, and other licensing basics.
Questions reviewed against the official Maryland driver handbook · July 7, 2026
16 questions · pass with 13 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. What must all CDL holders maintain regarding their medical status?
Correct answer: A valid, current Medical Examiner's Certificate (Med Cert)
CDL holders must keep a valid, updated medical certificate; letting it lapse can automatically downgrade your CDL to a non-commercial Class C license.
Source: Maryland CDL Manual — Section 1.3: Medical Documentation Requirements
2. A tank (N) endorsement is required for a tank with an individual capacity above 119 gallons when the total capacity of all tanks reaches what?
Correct answer: 1,000 gallons or more
A tank (N) endorsement is needed once an individual tank exceeds 119 gallons and every tank together totals at least 1,000 gallons.
Source: Maryland CDL Manual — Section 1.2.2: Endorsements & Restrictions
3. Which description fits a Class A commercial vehicle?
Correct answer: A combination with a GCWR of 26,001+ pounds towing a unit rated over 10,000 pounds
Class A covers combinations with a GCWR of at least 26,001 pounds where the towed unit's GVWR exceeds 10,000 pounds.
Source: Maryland CDL Manual — Section 1.2: CDL Classifications
4. Which vehicle fits the Class B category?
Correct answer: A single vehicle rated 26,001+ pounds, or one towing a unit of 10,000 pounds or less
Group B is one straight vehicle rated 26,001 pounds or higher, or that vehicle pulling a trailer no heavier than 10,000 pounds.
Source: Maryland CDL Manual — Section 1.2: CDL Classifications
5. A single vehicle with a gross vehicle weight rating of what value or more is a commercial motor vehicle?
Correct answer: 26,001 pounds or more
A lone vehicle whose GVWR reaches 26,001 pounds counts as a commercial motor vehicle, and so does a combination whose combined rating hits that same figure.
Source: Maryland CDL Manual — Section 1.1: Commercial Motor Vehicles
6. What does the 'E' restriction on a CDL mean?
Correct answer: No manual transmission — you tested in an automatic
An E restriction means you passed the skills test in an automatic, so you may not operate a CMV with a manual transmission.
Source: Maryland CDL Manual — Section 1.2.2: Endorsements & Restrictions
7. To haul doubles or triples, which endorsement must a driver add?
Correct answer: The T endorsement
The T endorsement is required to pull doubles or triples; note that triple trailers are not allowed on Maryland roads.
Source: Maryland CDL Manual — Section 1.2.2: Endorsements & Restrictions
8. How old must you be to operate a commercial motor vehicle in interstate commerce?
Correct answer: 21 years old
You must be 21 to drive a CMV in interstate commerce; 18 to drive intrastate; and 21 to haul hazardous materials.
Source: Maryland CDL Manual — Section 1.2.3: To Get a CDL or CLP
9. How long must you wait to retake a CDL knowledge test after failing it for a second time?
Correct answer: At least seven days
Fail a given knowledge test twice and you are required to hold off at least seven days before you may attempt it again.
Source: Maryland CDL Manual — Intro: Knowledge Tests/Endorsements
10. Two serious traffic violations in a CMV within three years lead to what disqualification?
Correct answer: At least 60 days
Two serious traffic violations within three years disqualify you for at least 60 days; three or more within three years for at least 120 days.
Source: Maryland CDL Manual — Section 1.4: Disqualifications
11. Which of these is listed as a 'serious traffic violation'?
Correct answer: Following another vehicle too closely
Serious violations include excessive speeding (15+ mph over), reckless driving, improper or erratic lane changes, and following too closely.
Source: Maryland CDL Manual — Section 1.4: Disqualifications
12. If you certify as intrastate or are under 21, which restriction is placed on your CDL?
Correct answer: The K restriction — intrastate only
The K restriction limits you to intrastate commerce; drivers under 21 must carry this intrastate restriction.
Source: Maryland CDL Manual — Section 1.2.2: Endorsements & Restrictions
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Every Maryland question is written from the official Maryland 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