Connecticut CDL — General Knowledge practice
Connecticut 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
13 questions · pass with 10 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 is the minimum age to drive a CMV in interstate commerce?
Correct answer: 21
Driving across state lines requires you to be at least 21 years old.
Source: Connecticut CDL Manual - Section 1: Introduction
2. How long do you lose your CDL for a first railroad-highway grade crossing violation?
Correct answer: 60 days
A first grade-crossing violation costs you your CDL for at least 60 days.
Source: Connecticut CDL Manual - Section 1: Introduction
3. You lose your CDL for at least how long after two serious traffic violations in a three-year period?
Correct answer: 60 days
Two serious traffic violations within three years bring a loss of your CDL for at least 60 days.
Source: Connecticut CDL Manual - Section 1: Introduction
4. What is the minimum age required to haul hazardous materials?
Correct answer: 21
The law sets 21 as the minimum age for hauling hazardous materials.
Source: Connecticut CDL Manual - Section 1: Introduction
5. For how long is a commercial learner's permit valid?
Correct answer: One year
A CLP is valid for one year; if you do not obtain your CDL before it expires, all knowledge tests must be retaken.
Source: Connecticut CDL Manual - Section 1: Introduction
6. What is the youngest age at which you may apply for a commercial learner's permit?
Correct answer: 18
The minimum age set for obtaining a commercial learner's permit is 18.
Source: Connecticut CDL Manual - Section 1: Introduction
7. What penalty applies to a driver's first out-of-service-order violation?
Correct answer: 90 days
A first out-of-service order violation results in loss of your CDL for at least 90 days.
Source: Connecticut CDL Manual - Section 1: Introduction
8. A tank (N) endorsement is required for a tank with an individual rated capacity over what amount?
Correct answer: More than 119 gallons
The tank endorsement is needed when a tank holds an individual rated capacity above 119 gallons with a combined capacity reaching 1,000 gallons.
Source: Connecticut CDL Manual - Section 1: Introduction
9. A Connecticut commercial driver's license expires within what period following your next birthday?
Correct answer: Four years
Your CDL runs out no more than four years past the date of your following birthday.
Source: Connecticut CDL Manual - Section 1: Introduction
10. How long must you hold a commercial learner's permit before you may take the skills test?
Correct answer: At least 14 days
You must hold the CLP for at least 14 days before you can test for your CDL.
Source: Connecticut CDL Manual - Section 1: Introduction
11. A Class A license covers combinations rated at what gross combination weight, with the towed unit over 10,000 pounds?
Correct answer: 26,001 pounds or more
Group A covers any combination with a GCWR of 26,001 pounds or more when the towed unit is rated above 10,000 pounds.
Source: Connecticut CDL Manual - Section 1: Introduction
12. How long is the CDL loss for committing three or more serious traffic offenses in a three-year span?
Correct answer: 120 days
Three or more serious traffic violations in three years cost you your CDL for at least 120 days.
Source: Connecticut CDL Manual - Section 1: Introduction
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