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 NM-CDL questions are organized by exam domain, so you can see how each part of the New Mexico CDL Permit Test blueprint is tested. Reveal the answer and explanation under each question.
A tractor is traveling at highway speed when the left-front tire blows. The truck pulls left, but the lane ahead is open. Which immediate response gives the driver the best chance of maintaining control?
Correct answer: B - Hold the wheel firmly and stay off the brakes at first
Both air-pressure gauges remain near 110 psi on a long downgrade, but the driver needs progressively more application pressure for the same slowdown and smells overheated brakes. Which condition best fits these findings?
Correct answer: A - Brake fade caused by excessive heat
A 72-foot tractor-trailer is traveling 55 mph on a dry, level road with an 8-second following gap. Using the CDL rule of 1 second per 10 feet of rounded-up vehicle length, plus 1 second above 40 mph, which adjustment is required?
Correct answer: C - Increase the gap to at least 9 seconds
A 10-leaf spring assembly has three broken leaves. No other suspension defect is found. What is the correct service disposition?
Correct answer: D - Out of service until the spring assembly is repaired
A car settles a few feet behind a loaded CMV in dense traffic, and no safe lane change is available. What is the safest way to manage the closing space?
Correct answer: A - Increase the space ahead so any slowing can be gradual
An unblocked 16-foot steel beam is being secured on a flatbed. No commodity-specific rule requires additional securement. Under the general tiedown rule, what is the minimum number of tiedowns?
Correct answer: D - Three tiedowns
A CMV driver reports for duty with a confirmed blood alcohol concentration of 0.03% and no other violation. Which rule applies immediately?
Correct answer: C - Placement out of service for 24 hours
During the applied-brake leakage test on a combination vehicle, the engine is off, the service brake is fully applied, and system pressure drops 5 psi in one minute. Which interpretation is accurate?
Correct answer: B - The system fails; the maximum is 4 psi in one minute
While safely parked, a driver fans the brake pedal and the low-air warning first activates at 48 psi. This reading indicates:
Correct answer: D - Defective; the warning came on below 55 psi
After controlling a steep downgrade, a driver stops in a safe, level area. The wheel-end brakes are extremely hot, and the vehicle can be securely chocked. Which parking method is appropriate while the brakes cool?
Correct answer: A - Chock the wheels; leave the spring brakes released
The NM-CDL exam also covers these domains. Drill them in the full free practice test:
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