Cdl permit test exam question and answers

You are testing the stopping action of service brakes on a hydraulic system.Which of these can mean there is a problem? - ANSWER Stopping action is delayed Which of these statements about downshifting for a long downh ...

You are testing the stopping action of service brakes on a hydraulic system.Which of these can mean there is a problem? - ANSWER Stopping action is delayed Which of these statements about downshifting for a long downhill grade is true? - ANSWER : It allows engine compression and friction to help the brakes slow the vehicle Which of these is a good driving rule for work zones? - ANSWER All answers are correct For an average commercial vehicle, being driven at 55 mph on dry pavement it will take about ____ to bring the vehicle to a stop. - ANSWER The length of a football field . The distance that you should look ahead of your vehicle while driving amounts to about ____ at highway speed. - ANSWER 1/4 mile You are checking your wheels and rims for a pre trip inspection. Which of these statements is true? - ANSWER Rust around wheel nuts may mean that they are loose You do not have a hazardous materials endorsement on your commercial driver's license. You are asked to haul hazardous materials in a placarded vehicle. You should: - ANSWER Refuse to haul the load The purpose of a baffle is to - ANSWER Control the load surge You must park on the side of a level, straight, two lane road. Where should you place the three reflective triangles? - ANSWER One within 10 feet of the rear of the vehicle, one about 100 feet to the rear, and one about 100 feet from the front of the vehicle What happens when tar heats up? - ANSWER It makes the road more slippery To give adequate warning when passing someone, you should? - ANSWER Tap the electrical horn first You are checking your steering and exhaust systems for a pre trip inspection. Which of these statements is true? - ANSWER Steering wheel play of more than 10 degrees (2 inches on a 20-inch steering wheel) can make it hard to steer How often should you check your mirrors? - ANSWER Every 8 to 10 seconds In rain, you should reduce your speed by? - ANSWER 1/3 You are checking your brakes and suspension system for a pre trip inspection. Which of these statements is true? - ANSWER All answers are correct and true Retarters are not: - ANSWER Robotic You are checking your tires for a pre trip inspection. Which of these statements is true? - ANSWER Tires of mismatched sizes should not be used on the same vehicle In snow and ice you should reduce your speed by? - ANSWER 1/2 When roads are slippery, you should: - ANSWER Make turns as gently as possible Which of these statements about brakes is true? - ANSWER The heavier a vehicle or the faster it is moving, the more heat the brakes have to absorb to stop it Truck escape ramps: - ANSWER Are designed to protect vehicles from damage You are starting your vehicle in motion from a stop As you apply power to the drive wheels, they start to spin. You should - ANSWER Take your foot off the accelerator The distance that you should look ahead of your vehicle while driving amounts to about ____ at highway speed. - ANSWER 1/4 mile You should use your mirrors to check: - ANSWER All answers Which of these statements about managing space is true? - ANSWER When the road is slippery, you should keep much more space in front of your vehicle Your vehicle is in a traffic emergency and may collide with another vehicle if you do not take action. Which of these is a good rule to remember at such a time? - ANSWER Heavy vehicles can almost always turn more quickly than they can stop Which of these statements about tires and hot weather driving is true? - ANSWER You should inspect your tires more often because they are more likely to fail The road you are driving on becomes very slippery due to a glare of ice, which of these is a good thing to do in such a situation? - ANSWER Stop driving and park where it is safe to do so Retarders: - ANSWER Can cause the vehicle to skid when slippery You are driving a new truck with a manual transmission. What gear will you probably have to use to take a long downhill grade? - ANSWER A lower gear than you would use to climb the hill Which one of these is not part of the check of the engine compartment done for a pre trip inspection? - ANSWER Valve clearance A moving vehicle ahead of you has a red triangle with an orange center on the rear. What does this mean? - ANSWER It may be a slow moving vehicle Controlled braking: - ANSWER Is used to keep a vehicle from skidding How do you correct a rear wheel acceleration skid? - ANSWER Stop accelerating For your safety, when setting out reflective triangles you should - ANSWER Hold the triangles between your body and oncoming traffic "Reaction distance" is the distance traveled from the time: - ANSWER The brain tells the foot to push the brake pedal to the time the foot actually pushes the pedal The most common cause of serious vehicle skids is: - ANSWER Driving too fast for road conditions Which of these statements about vehicle fires is true? - ANSWER A burning tire must be cooled The parking brake should be tested while the vehicle is: - ANSWER Parked Which of these is a good rule to follow when using a fire extinguisher? - ANSWER Aim at the base of the fire A drivers trip log, if required: - ANSWER Must be shown immediately when an officer requests it The load means the following? - ANSWER The maximum safe weight a tire can carry at a specified pressure Overloading can have a bad effect on? - ANSWER All , steering ,speed and braking The height of the vehicle center of gravity is very important for safe handling. A high center of gravity means you are more likely to do the following: - ANSWER tip over Too much weight on the steering axle can cause the following: - ANSWER ALL, steering axles failure , problems braking and tire pressure Under loaded front axles can cause the following: - ANSWER Poor traction What is the average reaction time? - ANSWER 60 ft What is considered to be the average perception distance? - ANSWER 60ft What is considered to be average effective braking distance time? - ANSWER 170 ft On average, the total stopping distance with air brakes is? - ANSWER 322 ft Covering the brake means? - ANSWER To have your foot over the brake and ready to push it if necessary Which of these statements about downshifting is true? - ANSWER Which of these statements about downshifting is true? Which of these can cause the vehicle to skid? - ANSWER Turning too sharply Not enough weight on the front axle Over acceleration All answers are correct What should you do when your vehicle hydroplanes? - ANSWER Release the accelerator Which of these pieces of emergency equipment should be carried at all times in your vehicle? - ANSWER Fire extinguisher Spare electrical fuses (if the vehicle uses them) Warning devices for parked vehicles All answers are correct Which of these statements about drugs is true? - ANSWER Use of drugs can lead to accidents and / or arrest To avoid a crash, you had to drive onto the right shoulder. You are now driving at 40 mph on the shoulder. How should you move back onto the pavement? - ANSWER Come to a complete stop if possible, before steering back onto the pavement Which fires can you use water to put out? - ANSWER Tire fires Which one of these is the most important thing to remember about emergency braking? - ANSWER If the wheels are skidding, you cannot control the vehicle To prevent shifting, there should be at least one tie down for every ____ feet of cargo. - ANSWER 10 To correct a rear wheel (drive wheel) braking skid, you should - ANSWER Release brakes and accelerate An enroute inspection should include checking: - ANSWER Cargo doors and /or cargo securement Tire temperature Brake temperature All answers are correct Which of these statements about backing a heavy vehicle is true? - ANSWER You should avoid backing whenever you can You are traveling down a long, steep hill. Your brakes get so hot that they fail. What should you do? - ANSWER Look for an escape ramp or escape route Where or when should you test the stopping action of your service brakes? - ANSWER When the vehicle is moving at about 5 mph Which of these statements about drinking alcohol is true? - ANSWER Alcohol first affects judgment and self-control, which are essential for safe driving Statistics show that drivers who have been drinking have a much greater chance of being in a crash A driver can lose his/her license for driving while under the influence of alcohol All answers are correct Cargo that can shift should have at least ____ tie downs. - ANSWER 2 Which of these statements about accelerating is true? - ANSWER Improper acceleration can cause mechanical damage If a straight vehicle (no trailer or articulation) goes into a front wheel skid it will: - ANSWER Go straight ahead even if the steering wheel is turned Which of these statements about certain types of cargo is true? - ANSWER Unstable loads such as hanging meat or livestock require extra caution on curves You are driving a heavy vehicle. You must exit a highway using an off-ramp that curves downhill. You should: - ANSWER Slow down to a safe speed before the turn Which of these statements about backing a heavy vehicle is true? - ANSWER Backing is always dangerous Which of these statements about cold weather driving is true? - ANSWER Windshield washer antifreeze should be added to the washer reservoir When should you wear seat belts? - ANSWER Any time you are in a moving vehicle The most important reason for being alert to hazards is so - ANSWER You will have time to plan your escape if the hazard becomes an emergency When does hydroplaning occur? - ANSWER Is more likely if tire pressure is low You must drive on a slippery road. Which of these is a good thing to do in such a situation? - ANSWER Slow down gradually Medical certificates must be renewed every - ANSWER 2 years Which of these is the most important thing to remember about emergency braking? - ANSWER If the wheels are skidding, you cannot control the vehicle When a vehicle is caring a load at night, which extends four feet or more beyond the rear of the body, there must be ____ at the extreme end of the load. - ANSWER 2 red