General Knowledge CDL Practice Questions
236 free General Knowledge CDL-style practice questions.
When going down a long steep downgrade, you should always:Stab braking should not be used on vehicles with:Which of these statements about speed management is true?Merging onto the road is safest if you:To avoid an accident, you moved to the shoulder. Forced to return to the road, you should:Controlled braking:Which of these statements about the hazardous vehicle fire is true?A hazard:What three distances build up the total stopping distance of your truck or bus?Brake drums (or discs) must not have cracks longer than ____ the width of the friction area.Which of these statements about marking a stopped vehicle is true?Which of these is a good thing to remember when crossing or entering traffic with a heavy vehicle?If you must cross into the oncoming lane to make a turn, you should:Which of these statements about cargo loading is true?If you are stopped at a roadside rest area and found to have a BAC (Blood Alcohol Concentration) of 0.02,…The center of gravity of a load:You are checking your tires for a pre-trip inspection. Which of these statements is true?The distance that you should look ahead of your vehicle while driving is about __ at low speeds.You are driving a heavy vehicle. You must exit a highway using an off-ramp that curves downhill. You should:Which of these is not part of the pre-trip inspection of the engine compartment?Which of these is not a type of retarder?You can see a marking on a vehicle ahead of you. The marking is a red triangle with an orange…Which of these would NOT help if the windshield is covered with ice?The BAC (Blood Alcohol Concentration) for commercial drivers to be considered intoxicated when driving a commercial vehicle is:What keeps an engine cool in hot weather while driving?Implied consent means:Where should the ignition key be during the pre-trip inspection?Which of these statements about tires and hot weather driving is true?Which of these statements about double clutching and shifting is true?The engine brake effect is greater when the engine is _____ governed RPM and the transmission is in a _____…If you are not sure what to use to put out a hazardous material fire, you should:For your safety, when setting out reflective triangles, you should:Which of these statements about downshifting is true?What is the proper way to hold a steering wheel?Why does vehicle speed naturally increase on a downgrade?When merging:Which of these statements about cold weather driving is true?In case of which fires can you use water to put it out?The total weight of a powered unit, the trailer, and the cargo is called?How many red reflective triangles are you required to carry?What is true about bad weather and driving conditions?A full stop is required at a railroad crossing when:Your vehicle has hydraulic brakes. While traveling on a level road, you press the brake pedal and find that it…The bridge formula:To prevent a load from shifting, there should be at least one tie-down for every ____ feet of cargo.What happens to tar on the road pavement during hot weather?Which of the statements about backing a heavy vehicle is NOT true?You should signal continuously while turning because:To avoid an accident, you moved to the shoulder. The shoulder is clear; you should:The best drivers are those who watch and prepare for hazards. This is called _________ driving.