General Knowledge CDL Practice Questions
236 free General Knowledge CDL-style practice questions.
While driving, ice builds up on your wipers and they no longer clean the windshield. You should:A vehicle is loaded with very little weight on the drive axle. What may happen?What is the most important reason to inspect your truck or bus?Which of these is the most important thing to remember about emergency braking?To prevent brake fade, you should:You are driving a heavy vehicle. You must exit a highway using an off-ramp that curves downhill. You should:High beams should be:Which of the following is NOT a characteristic of tire failure?If you are being tailgated, you should:Heavy vehicles often move slower than others. Which of these is NOT a good rule to follow while driving a…When driving at night, you should:You should use your mirror to check?Drivers of trucks and tractor-trailers with cargo must check that the cargo is well secured within the first ___ miles…To avoid a crash, you had to drive onto the right shoulder. You are now driving at 40 mph on…You should stop driving:Which of these statements about drugs is true?When are helpers needed to back your vehicle?You are traveling down a long, steep hill. Your brakes get so hot that they have failed. What should you…Which vehicle will have the most difficulty staying in its lane during strong winds?Which of these rigs has a higher chance to off-track while making a turn?Which of these is true about mirror adjusting?If a straight vehicle (not a trailer or articulation) goes into a front-wheel skid, it will:When the roads are slippery, you should:You are checking your brakes and suspension system for a pre-trip inspection. Which of these statements is NOT true?As the blood alcohol concentration (BAC) goes up, what happens?When driving at night, you should use your high beams when oncoming traffic is not within ____ feet?What is the best advice for drivers when heavy fog occurs?Controlled braking is:To correct a drive wheel braking skid, you should:How does the weight of the vehicle affect stopping distance?What does emergency braking mean?Which of these is a good thing to do when driving at night?You should always turn on your emergency four-way flashers when you:Cargo inspection:Your vehicle will be put out of service if ____ or more leaves in any leaf spring are missing.One can recognize hazardous materials by looking at the container:Which of these statements about vehicle fire is true?You are driving a vehicle at 55 mph on dry pavement. About how much total stopping distance will you need…You must drive on a slippery road. Which of these is a good thing to do in such a situation?When driving through the work zone, you should:What should you do before driving in the mountains?Which of these is true about the use of drugs while driving?You are driving a 40-foot vehicle at 35 mph. The road is dry, and visibility is good. What is the…You are required to inspect your truck within how many miles after beginning the trip?You should avoid driving through deep puddles or flowing water. But if you must, which of these steps can help…Extra care is needed to keep your vehicle centered in your lane because commercial vehicles:Tourists may be hazardous because?When you are parked on the side of the road at night, you must:Which of these is true about proper use of a steering wheel?Which of these is correct about emergency or evasive action?
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