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These 10 free LA-CDL questions are organized by exam domain, so you can see how each part of the Louisiana CDL Permit Test blueprint is tested. Reveal the answer and explanation under each question.
A driver will operate a straight truck with a GVWR of 28,000 pounds while towing a utility trailer with a GVWR of 9,000 pounds. Assuming no passenger or hazardous-material endorsement is involved, which CDL class is required?
Correct answer: C - Class B
A 73-foot tractor-trailer is traveling 52 mph on a dry road in good visibility, with a measured following gap of 8 seconds. Using the CDL rule - one second per 10 feet of vehicle length or fraction, plus one additional second above 40 mph - which adjustment is required?
Correct answer: D - Increase the gap to at least 9 seconds
At highway speed, the left-front tire suddenly blows. The truck begins pulling left, but the lane ahead is clear. Which response comes first?
Correct answer: B - Grip the wheel firmly and stay off the brake
During a pre-trip inspection, a steering-axle tire measures 3/32 inch in every major groove. The tire has no exposed cord or sidewall damage. Which disposition is correct for this tire?
Correct answer: C - Remove it from steering-axle service before driving
A passenger bus approaches a railroad crossing marked EXEMPT. No officer, flagger, or train is present, and the view is clear. Which crossing procedure applies?
Correct answer: A - Slow and check carefully; no ordinary full stop is required
While testing a dual air-brake system with the engine off and key on, the warning buzzer first sounds when the gauge reaches 55 psi. The parking controls have not yet popped out. How should this result be interpreted?
Correct answer: D - Fail; the warning must activate before pressure falls below 60 psi
A tractor passes a tug test after coupling, but the driver can see a narrow gap between the trailer apron and the fifth wheel. The locking jaws appear closed. Which action is required before moving?
Correct answer: B - Uncouple and correct the connection
A vehicle carries 700 pounds aggregate gross weight of Class 3 flammable liquid and 700 pounds aggregate gross weight of Class 8 corrosive material, all in nonbulk packages loaded at one facility. No Table 1 material or special subsidiary hazard is present. Which statement about a DANGEROUS placard is correct?
Correct answer: A - It may replace both specific Table 2 placards
A partially loaded smooth-bore tanker develops a gentle forward-and-back rocking motion after a routine stop. The road ahead is clear. Which operating adjustment is most appropriate?
Correct answer: B - Increase following distance and use smooth, early braking
After unloading, a child drops a backpack beside the right-front wheel and bends down out of the driver's view. The red warning lights are still active. What must happen before the bus moves?
Correct answer: A - The bus must remain secured until the driver locates and accounts for the child
The LA-CDL exam also covers these domains. Drill them in the full free practice test:
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