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 UT-CDL questions are organized by exam domain, so you can see how each part of the Utah CDL Permit Test blueprint is tested. Reveal the answer and explanation under each question.
A 24-foot tractor is pulling a 36-foot trailer at 50 mph on a wet highway. Before adding any extra cushion for rain, what is the minimum following interval for the 60-foot combination?
Correct answer: C - 7 seconds before adding a rain margin
At highway speed, the right-front tire blows and the truck pulls toward the shoulder. The driver still has steering control. What should happen first?
Correct answer: A - Hold the wheel firmly, avoid braking, and ease off the accelerator
A fully loaded commercial vehicle is descending a grade with a chosen safe speed of 40 mph. The driver is using snub braking correctly. When the vehicle returns to 40 mph, what comes next?
Correct answer: D - Brake to about 35 mph for roughly three seconds, then release fully
A pre-trip inspection produces four findings. Which one blocks departure?
Correct answer: B - A steering-axle tire with 3/32 inch of tread in every major groove
While a dual-air-brake vehicle is moving, the primary gauge falls to 52 psi, the secondary gauge reads 98 psi, and the low-air warning activates. How should the driver respond?
Correct answer: B - Stop immediately and safely while service braking remains controllable
During correctly set up leakage tests on a fully charged tractor-semitrailer, pressure drops 3.4 psi in the static test and 3.8 psi in the applied test. Classify the results.
Correct answer: D - The static test fails, but the applied test passes
After the bulb check, a tractor-semitrailer's dashboard ABS warning lamp stays on. Air pressure is normal, and a 5-mph service-brake check shows no pull, delay, or unusual feel. What disposition is appropriate?
Correct answer: A - Brake normally, drive cautiously, and arrange prompt ABS repair
A tug test holds, but daylight remains between the trailer apron and fifth wheel, and the jaws appear to be around the kingpin head rather than the shank. What diagnosis fits both findings?
Correct answer: C - A high-hook or miscoupling that must be separated and coupled again
The red emergency/supply line separates from a semitrailer while the combination is moving. Which response sequence should the driver expect?
Correct answer: D - Trailer emergency brakes apply and tractor protection closes; stop safely
A driver is assembling a double with two identical semitrailers whose total loaded weights are 18,000 pounds and 29,000 pounds. Which load order best limits rear amplification?
Correct answer: C - Put the 29,000-pound trailer first and the lighter trailer at the rear
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