10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
These 10 free CT-CDL questions are organized by exam domain, so you can see how each part of the Connecticut CDL Permit Test blueprint is tested. Reveal the answer and explanation under each question.
A straight truck has a GVWR of 26,500 pounds and tows a trailer with a GVWR of 9,800 pounds. It carries neither passengers nor hazardous materials. Which CDL class is required?
Correct answer: C - Class B, because the power unit exceeds 26,001 pounds and the trailer is rated below 10,000 pounds
During a pre-trip inspection, a steering-axle tire measures 3/32 inch of tread and a drive-axle tire measures 3/32 inch. Both are otherwise sound. What is the correct decision?
Correct answer: A - Do not operate until the steering tire is replaced; the drive tire meets its tread minimum
Traffic is moving at 55 mph on dry pavement. A 60-foot tractor-trailer has normal visibility and no unusual traffic hazards. What following interval meets the CDL minimum before extra space is added for adverse conditions?
Correct answer: D - 7 seconds
At highway speed, a front tire blows out and the steering suddenly pulls toward one side. What should the driver do first?
Correct answer: B - Grip the steering wheel firmly and stay off the brake initially
A flatbed load was checked before departure and again at mile 40. At mile 115, the driver takes a short fuel break; no shifting is visible. What must happen before the trip continues?
Correct answer: B - Reinspect the cargo and tiedowns before returning to traffic
During an applied air-loss test on a tractor-semitrailer, the engine is off, the parking brakes are released, and the foot brake is held after the initial pressure drop. The system loses 4.6 psi in one minute. How should this result be scored?
Correct answer: D - Fail, because applied loss exceeds 4 psi in one minute
With the engine off, a driver fans the brakes. The low-air warning first activates at 53 psi, and the parking-brake control pops out at 32 psi. Which interpretation is correct?
Correct answer: A - The warning test fails, but the pop-out test passes
The yellow ABS lamp remains on after its normal self-check, but the air pressure, leakage, and service-brake tests are satisfactory. What does the lamp most accurately indicate?
Correct answer: C - Antilock protection may be unavailable, while normal braking remains
A coupling tug test holds and there is no visible gap between the fifth-wheel plates. A visual check, however, shows the locking jaws around the kingpin head rather than the shank. What is the proper decision?
Correct answer: D - Do not move; uncouple and recouple until the jaws lock around the shank
On a rain-slick road, the semitrailer wheels lock and the trailer begins to swing toward the adjacent lane while the driver is braking in a straight line. Which control response is best?
Correct answer: A - Release braking enough for the trailer wheels to roll, then correct smoothly
The CT-CDL exam also covers these domains. Drill them in the full free practice test:
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