Maryland CDL — General Knowledge practice
Maryland 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
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.
Show all 12 questions with answers
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