General Knowledge

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How often should you check your cargo?

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A commercial motor vehicle (CMV) is defined as...

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Suspension systems...

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At 55 miles-per-hour it takes about 6 seconds to stop a fully loaded truck and the braking distance is...

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Which of the following statements about downshifting is NOT true?

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Tires should should be replaced...

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Which of the following statements about overhead space is true?

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In the event of an accident you should remember to do the following EXCEPT...

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When accelerating...

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Your vehicle is going down a long hill and your brakes begin to fail. What should you do?

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To correct a drive-wheel braking skid you should...

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If you must stop on the shoulder of the road, you should place warning devices at all of the following places except...

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Which of the following statements about stopping distances is NOT true?

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What is the reason the exhaust system should be checked?

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When is the road likely to be more slippery?

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Which of the following is NOT true when driving through a curve?

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When using turn signals, which of the following should be avoided?

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Safe drivers maintain space around their vehicles for the following reasons except...

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In the event of a tire failure you should...

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The following statements about an engine overheating are TRUE EXCEPT...

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When going down a hill you should always...

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The best time to test your parking brake is...

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Which is NOT part of the pre-trip inspection...

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How much space should you maintain in front of you at highway speeds?

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Which one of the following is true about shifting gears?

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When making a left hand turn you should always...

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The best way to warn the drivers behind you that you are slowing down is to...

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What is the best thing to do if you are tired?

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When backing up the tractor trailer, try to AVOID...

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Which of the following statements about alcohol is true...

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If you do not have a HAZMAT endorsement on your CDL, under what conditions may you legally haul hazardous materials?

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If you are asked to haul a placarded load and you do not have HAZMAT endorsements you should

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Upon conviction of a traffic violation you should notify your employer within 30 days if...

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Overloading your trailer can result in the following EXCEPT...

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All drivers who need a CDL must take the ...

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If you are convicted of a traffic violation in a state other than the one that issued your CDL...

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You're pulled over for weaving all over the lanes. If you refuse to take an alcohol sobriety test, you may be disqualified just as if you WERE driving under the influence(DUI). This is because...

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Concerning night driving, which statement is true?

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When making an emergency stop on the highway...

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You should downshift...

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Maintain good visual alertness by...

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Signaling other drivers when it's safe for them to pass is...

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Normal engine temperature ranges from...

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Your vehicles battery box must have...

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Rust around wheel nuts often means that...

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When the roads are wet, icy, or snow covered...

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If you try to downshift while coming down a mountain, you might...

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A vehicle marked at the rear with a red triangle having an orange center...

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Bridge laws...

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Truck escape ramps:

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Which of these can cause the vehicle to skid?

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You are driving a vehicle that could safely be driven at 55 MPH on an open road. But traffic is now heavy, moving at 35 MPH although the speed limit is 55. The safest speed for your vehicle in this situation is most likely:

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Every time you park your vehicle and shut the engine off you should:

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Which of these describes how you should use the brake pedal on a steep downhill grade?

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For an average commercial vehicle, being driven at 55 MPH on dry pavement it will take about ____ to bring the vehicle to a stop.

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Which of these statements about certain types of cargo is true?

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Which of these statements about backing a heavy vehicle is true?

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When should you wear seat belts?

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The most common cause of serious vehicle skids is:

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When roads are slippery, you should:

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While driving, you see a small (1 foot square) cardboard box ahead in your lane. You should:

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Which of these pieces of emergency equipment should be carried at all times in your vehicle?

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What is counter steering?

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You do not have a hazardous materials endorsement on your commercial drivers license. When can you drive a vehicle hauling hazardous materials?

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You are driving a new truck with a manual transmission. What gear will you probably have to use to take a long downhill grade?

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High beams should be:

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An en-route inspection should include checking:

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Where or when should you test the stopping action of your service brakes?

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Stab braking:

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Which of these statements about brakes is true?

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What should you do when your vehicle hydroplanes?

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Under-loaded front axles can cause the following:

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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?

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Which of these is a sign of tire failure?

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Which of these statements about drinking alcohol is true?

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Which of these can help you stay alert while driving?

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Which one of these is not part of the check of the engine compartment done for a pre trip inspection?

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According to the driver's manual, why should you limit the use of your horn?

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You are traveling down a long, steep hill. Your brakes get so hot that they fail. What should you do?

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You are starting your vehicle in motion from a stop. As you apply power to the drive wheels, they start to spin. You should:

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You should use your mirrors to check:

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The proper way to hold a steering wheel is at clock positions ____ and ____.

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Cargo inspections:

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Your brakes can get wet when you drive through a heavy rain. What can this cause when the brakes are applied?

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How do you test hydraulic brakes for leaks?

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Which of these is a good rule to follow when driving at night.

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A vehicle is loaded with very little weight on the drive axle. What may result?

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The key principle in balancing cargo weight is to keep the load:

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Which of these statements about using mirrors is true?

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Which of these statements about down shifting is true?

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Which of these statements about drugs is true?

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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 proceed?

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Which of these statements about managing space is true?

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Which of these is the most important things to remember about emergency braking?

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To correct a rear wheel (drive wheel) braking skid, you should:

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While driving, ice builds up on your wipers and they no longer clean the windshield. You should:

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The road you are driving on becomes very slippery due to black ice. Which of these is a good thing to do in such a situation?

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You must park on the side of a level, straight, two lane road. Where should you place the three reflective triangles?

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You are driving in the right lane of a four lane, undivided road, you come over a hill and find a car stopped ahead in your lane. You do not have room to stop, and the hill blocks your view to the rear. Which of these is most likely the best action to take?

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The following are all probable signs of a tire blowout EXCEPT...

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Water can be used to extinguish which of the following fires?

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Driving at night is more dangerous because of the following EXCEPT...

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Which of the following statements about your mirrors is true?

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When driving in heavy traffic you should travel...

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If you find that you are being tailgated, you should...

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How should you hold your hands on the steering wheel?

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When making a right hand turn you should always...

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To correct a drive wheel acceleration skid you should...

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When driving at highway speeds, you should look 12-15 seconds ahead which is...

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Which of the following are causes of vehicle fires...

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Hydroplaning can occur when you drive through water or slush. If you experience hydroplaning you should...

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An engine retarder (Jake Brake) is designed to...

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The best way to put out a fire is to...

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A front wheel skid is usually caused by...

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If you're required to keep a log of your time...

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If your vehicle doesn't pass a roadside inspection...

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By law, you must have your vehicle's lights on...

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Normal oil pressure while idling is...

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Progressive shifting means...

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The legal size and weight distribution limits...

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Blocking used to prevent cargo movement...

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Drive tire tread must be at least...

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Normal clutch travel is...

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State law can regulate...

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If you are being tailgated, you should:

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The parking brake should be tested while the vehicle is:

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A drivers trip log, if required:

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When should the pre-trip inspection report from the last driver be reviewed?

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If you are stopped at a rest area and found to have a BAC (Blood Alcohol Concentration) of .02 you will:

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Which of these statements about using turn signals is true?

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Which of these statements about staying alert to drive is true?

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You are driving on a two lane road. An oncoming driver drifts into your lane and is headed straight for you. Which of these is generally the best action?

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You should avoid driving through deep puddles or flowing water. But if you must, which of these steps can help keep your brakes working?

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How far should a driver look ahead of the vehicle while driving?

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Which of these statements about cargo loading is true?

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Which of these statements about marking a stopped vehicle is true?

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You are driving a 40 foot vehicle at 45 MPH. Driving conditions are ideal (dry pavement, good visibility). What is the least amount of space that you should keep in front of your vehicle to be safe?

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On wet roads, you should reduce your speed:

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Which of these statements about cold weather driving is true?

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The most important reason for being alert to hazards is so:

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Which of these is a good rule to follow when using a fire extinguisher?

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Is it legal to drive with one fourth of a vehicles leaf springs broken or missing?

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Dry bulk tanks require special care because:

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You are checking your tires for a pre trip inspection. Which of these statements is true?

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The first step to take if your vehicle catches fire while driving is:

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Which of these statements about double clutching and shifting is true?

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The center of gravity of a load:

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You are testing the stopping action of service brakes on a hydraulic system. Which of these can mean there is a problem?

Each state requires that those seeking to obtain a CDL license must first pass a test of generalized trucking knowledge, it is required you ass the general knowledge test before proceeding to gain additional CDL endorsements. The CDL general knowledge test is a written test designed to assess your competence and level of trucking knowledge and covers the material presented any CDL handbook. The test covers all aspects of general trucking knowledge required to attain your CDL license including, driving safely, transporting cargo safely, and performing pre-trip vehicle inspections, air brakes, and passenger and combination vehicles.

The material covered on the CDL general knowledge test is practically the same in every state to ensure that each CDL licensed driver is completely aware of the laws and requirements regardless of the license issuing state. Each driver wishing to successfully earn their CDL license must achieve an 80% passing score on the general knowledge test.