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 OH-CDL questions are organized by exam domain, so you can see how each part of the Ohio CDL Permit Test blueprint is tested. Reveal the answer and explanation under each question.
A straight truck has a GVWR of 29,000 pounds and tows a trailer with a GVWR of 9,500 pounds; neither actual weight exceeds its rating. The vehicle is not carrying passengers or placardable hazardous materials. Which CDL class applies?
Correct answer: C - Class B; the truck is at least 26,001 pounds and the trailer is 10,000 pounds or less
A 60-foot tractor-trailer is moving at 50 mph on dry, level pavement. Before adding extra allowance for traffic or weather, what minimum following interval does the CDL rule call for?
Correct answer: A - 7 seconds
At highway speed, a tractor-trailer's right steer tire blows out and the vehicle pulls sharply right. Which initial response offers the best chance of retaining control?
Correct answer: B - Grip the wheel firmly, stay off the brakes, and let the vehicle stabilize
Entering a rain-slick curve while braking, a driver turns the wheel but the tractor continues almost straight; the front tires have lost traction. What should the driver do to recover?
Correct answer: D - Ease off braking and steering until front-tire grip returns, then steer smoothly
A 12,000-pound machine is restrained by two undamaged tiedowns, each rated at 4,000 pounds WLL. Each tiedown runs from an anchor on one side of the trailer, over the machine, to an anchor on the opposite side. Does this arrangement satisfy the aggregate WLL requirement?
Correct answer: A - It meets the rule: 8,000 pounds counts toward a 6,000-pound minimum
A loaded CMV that is required to stop at railroad tracks halts 25 feet from the nearest rail. The tracks and space beyond are clear. Which technique is correct for crossing?
Correct answer: C - Select a gear before moving and cross without shifting
During a post-coupling inspection, the fifth-wheel plates are flush, the jaws fully surround the kingpin shank, and the release arm and safety latch are locked. The landing gear is still near the ground. What should occur before it is raised fully?
Correct answer: B - Gently pull against the applied trailer brakes to test the lock
On a long downgrade, a combination-vehicle driver plans to use the trailer hand valve continuously to keep the trailer "stretched" behind the tractor. Why is this unsafe?
Correct answer: D - It can lock the trailer wheels and initiate a jackknife
During a static leakage test on a combination vehicle, the engine is off, the wheels are chocked, the parking brakes are released, and the service brakes are not applied. After stabilization, pressure drops 7 psi in 2 minutes. How should the result be interpreted?
Correct answer: C - Fail; 3.5 psi per minute exceeds the released-brake combination limit
After the trailer ABS lamp completes its normal bulb check, it remains illuminated. A low-speed brake test is straight and firm, and no air leak is found. What does this condition mean operationally?
Correct answer: A - Regular brakes may work, but ABS protection is unavailable and needs repair
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