View instructions
The CDL general knowledge test is required to be taken by all CDL applicants. The Connecticut CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the Connecticut CDL Manual. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual CT general knowledge test! To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1. Drivers should inspect their cargo and its securing devices within the first _______ after beginning the trip.
15 miles
25 miles
50 miles
100 miles
2. How many reflective triangles/emergency reflectors should you carry?
3. While driving at night, use __________ when it is safe and legal to do so.
interior lights
high beams
emergency flashers
low beams
4. Which of the following could cause poisonous carbon monoxide to enter the cab?
Exhaust system leaks
Wrong type of fuel
Lack of engine oil
Lack of engine coolant
5. Which of the following statements about driving in very hot weather is true?
You should inspect the tires every 2 hours or every 100 miles.
If a tire is too hot to touch, keep driving to cool it off.
As the temperature of the tire increases, the air pressure of a tire decreases.
None of the above.
6. Which of the following is a common cause of truck fires?
Short circuits due to loose connections.
Under-inflated tires and duals that touch.
loose fuel connections.
All of the above.
7. Having ABS on only the trailer:
makes the trailer more likely to roll over.
makes the trailer more likely to swing out.
still gives you more control over your vehicle during braking.
is very dangerous.
8. Which of the following statements about alcohol is TRUE?
Drinking black coffee will help sober you up.
Most people can drink 2 beers without affecting their driving ability.
Taking a cold shower will help sober you up.
Time is the only method that works to sober you up.
9. Drivers should adjust their mirrors:
before driving.
after driving.
while driving.
None of the above.
10. During a trip you need to inspect the cargo and its securing devices:
every 3 hours or 150 miles.
within the first 50 miles after beginning a trip.
after every break you take.
All of the above.
Page 1 of 5
Next page

CT CDL Knowledge Test

Number of questions: 50
Correct answers to pass:40
Passing score:80%
Share This Online CDL Test
Rate this CDL Knowledge Test
4.9 out of 5
based on 285 votes