North Carolina General Knowledge Practice Test
This is our North Carolina General Knowledge Practice Quiz and Practice Test compiled of 50 questions each. Each question is worth two points for a total of 100 possible points. A passing score is 80%.
The General Knowledge Practice Quiz reveals the correct answer during each question to help you study for the actual General Knowledge test. The General Knowledge Practice Test doesn’t reveal the correct answers until the test is over.
The questions and answers are given in random order each time you retake the test. When you are finished testing, simply click on the “Get Results” button to see your test results. Clicking on the blue “List” button will reveal a list of all the questions you answered correctly and incorrectly. To take the test again, just refresh your browser window. It’s that easy.
Press the start button to begin your free General Knowledge Practice Quiz. Good luck!
General Knowledge CDL Practice Quiz
Question 1 |
A | have better traction when stopping than full trucks |
B | need less space ahead than full trucks |
C | require greater stopping distance than full trucks |
D | have the same stopping distance as full trucks |
Question 2 |
A | Pedestrians and bicyclists. |
B | Road construction zones. |
C | A stopped transit bus. |
D | All of these are considered a hazard. |
Question 3 |
A | four |
B | two |
C | three |
D | one |
Question 4 |
A | two inches |
B | one half inch |
C | three inches |
D | one inch |
Question 5 |
A | To prevent others from distracting you. |
B | To direct traffic away from you. |
C | To see the blind spots you can't see. |
D | To watch for steering errors. |
Question 6 |
A | driving too fast for road conditions. |
B | bad tires. |
C | driving too slow for road conditions. |
D | poorly adjusted brakes. |
Question 7 |
A | The same amount of stopping distance. |
B | Greater stopping distance. |
C | It depends on what mood you are in at the time. |
D | Shorter stopping distance. |
Question 8 |
A | roll down your window so that the fresh air will help keep you awake. |
B | make sure you are driving slow enough so you can stop within the range of your headlights in case of an emergency. |
C | drink coffee or other caffeine products to help keep you awake. |
D | keep your high beams on at all times. |
Question 9 |
A | you want to have time to act before it turns into an emergency. |
B | it is a federal law. |
C | you want to avoid doing something all of a sudden. |
D | you want to have a plan to communicate the risk. |
Question 10 |
A | you are driving on hilly, rural roads. |
B | the road is wet, icy, or snow covered. |
C | you are driving on the freeway. |
D | road conditions are excellent. |
Question 11 |
A | Because tank baffles are not always legal with outage. |
B | Because some of the heaviest liquids don’t need any. |
C | Because it's good to know that information. |
D | Because some liquids expand more than others when they get warm. |
Question 12 |
A | A minimum of two. |
B | A minimum of four. |
C | A minimum of three. |
D | A minimum of one. |
Question 13 |
A | Shift the truck into neutral and coast down the hill to save gas. |
B | Use a higher gear than you would use to climb the hill. |
C | Use a lower gear than you would use to climb the hill. |
D | Use the same gear you would use to climb the hill. |
Question 14 |
A | the trailer is fully loaded or very heavy. |
B | the trailer is empty or lightly loaded. |
C | the trailer is out of brake adjustment. |
D | the trailer is being hauled at high speed. |
Question 15 |
A | the end of the kingpin is at waist level. |
B | the kingpin is about 1¼ inches above the fifth wheel. |
C | the end of the kingpin is even with the top of the fifth wheel. |
D | it will be raised slightly when the tractor is backed under it. |
Question 16 |
A | placard numbers match the seal numbers. |
B | seal is secure. |
C | load is properly secured. |
D | seal is authentic. |
Question 17 |
A | Warn other drivers by using your left turn signal lights. |
B | Keep your low beam lights on. |
C | Put your warning devices out within 15 minutes. |
D | Turn on your 4-way emergency flashers to warn other drivers. |
Question 18 |
A | a dry bulk tank should only be filled halfway. |
B | the load can shift. |
C | the load should not get wet. |
D | the load can catch fire easily. |
Question 19 |
A | rust |
B | leaks |
C | burning |
D | rubbing |
Question 20 |
A | there is ice and snow, to prevent skidding. |
B | you will be parked for a short time. |
C | it is absolutely necessary. |
D | testing the trailer brakes after hooking up to a trailer. |
Question 21 |
A | downshift into the turn. |
B | keep the cargo as close to the ground as possible. |
C | check to make sure that the brakes are properly balanced. |
D | keep two hands firmly planted on the steering wheel at all times. |
Question 22 |
A | to help ensure the vehicle will make it to your destination. |
B | because law enforcement may inspect your vehicle on the road. |
C | to ensure safety for yourself, your passengers, and other drivers. |
D | because it is a requirement for all drivers. |
Question 23 |
A | safely remove the radiator cap and add coolant while the engine is hot. |
B | use only water in the cooling system. |
C | use windshield washer fluid as coolant. |
D | check the coolant level of a hot engine. |
Question 24 |
A | whenever you stop to refuel. |
B | if any problems occurred the last the time the vehicle was operated. |
C | at least once a week. |
D | before operating the vehicle. |
Question 25 |
A | to combat terrorism. |
B | to warn others of hazardous materials. |
C | to make your vehicle look official. |
D | to avoid mixing hazmat with food. |
Question 26 |
A | fishtailing. |
B | offtracking. |
C | sidetracking. |
D | slidetracking. |
Question 27 |
A | eating spicy food in the truck cab |
B | under inflated tires |
C | both loose fuel connections and under inflated tires |
D | loose fuel connections |
Question 28 |
A | The same amount of space you would at night. |
B | The same amount of space you would on a dry road. |
C | More space than is needed for ideal driving conditions. |
D | One vehicle length for every 10,000 lb. of gross vehicle weight. |
Question 29 |
A | before starting down a hill and before going up a hill. |
B | before going up a hill and before entering a curve. |
C | before starting down a hill and before entering a tunnel. |
D | before starting down a hill and before entering a curve. |
Question 30 |
A | exempt from weight limit restrictions. |
B | exempt from hazardous materials restrictions. |
C | exempt from height restrictions. |
D | generally used when freight is carried part way by rail or ship. |
Question 31 |
A | five or more. |
B | three or more. |
C | none of these. |
D | seven or more. |
Question 32 |
A | mirrors |
B | rolled down windows |
C | sunglasses |
D | rear view cameras |
Question 33 |
A | truck stops, gas stations |
B | law enforcement officers, detours |
C | tunnels, overpasses |
D | vehicles, traffic signs |
Question 34 |
A | Slow to a safe speed before the curve. |
B | Turn on your four-way flashers as you approach the offramp. |
C | Downshift after you are in the curve. |
D | Nothing, because the posted speed limit for the offramp is usually 10 miles per hour below the safe speed limit for the offramp. |
Question 35 |
A | the brake pedal feels firm when you apply pressure. |
B | you release pressure on the brake pedal and speed increases. |
C | there is a slight vibration when you press down on the brake pedal. |
D | you have to push harder and harder to get the same stopping power on a downgrade. |
Question 36 |
A | Play in the steering wheel of more than five degrees. |
B | Oil on the tie rod. |
C | Play in the steering wheel of more than ten degrees (two inches on a 20-inch steering wheel). |
D | Too many vertical stacks. |
Question 37 |
A | four times |
B | three times |
C | two times |
D | half |
Question 38 |
A | slap yourself in the face three times. |
B | turn up the radio. |
C | stop to sleep. |
D | roll down the windows. |
Question 39 |
A | 4/32-inch in every major groove. |
B | 2/32-inch in every major groove. |
C | 3/32-inch in every major groove. |
D | 5/32-inch in every major groove. |
Question 40 |
A | decreases when the service breaks are hot. |
B | depends on the service brakes being in adjustment. |
C | increases when the service brakes are hot. |
D | is not affected by the condition of the service brakes. |
Question 41 |
A | Load cargo weight evenly over all the axles. |
B | Load more weight over the drive axle for better traction. |
C | Load more cargo toward the front of the truck for a full load. |
D | Load cargo toward the rear of the truck for easier unloading. |
Question 42 |
A | the lug nut needs to be replaced. |
B | the lug nut is cheap. |
C | the lug nut is loose. |
D | the wheel needs cleaning. |
Question 43 |
A | Using hand signals. |
B | Using a helper when backing up. |
C | Using turn signals, 4-way flashers, headlights, and the horn. |
D | Using your CB radio or cell phone to inform others. |
Question 44 |
A | Electrical fire. |
B | None of these fires can be safely extinguished by water. |
C | Gasoline fire. |
D | Grease fire. |
Question 45 |
A | Pump the brake pedal 3 times; push the pedal firmly 5 seconds; the pedal should not move. |
B | Push the brake pedal firmly 5 seconds; listen for leaks. |
C | Move forward slowly and push firmly on the brake pedal. |
D | Pump the brake pedal 5 times; push the pedal firmly 3 seconds; the pedal should not move. |
Question 46 |
A | Perception distance, slowing distance, and braking distance. |
B | Observation distance, reaction distance, and slowing distance. |
C | Perception distance, response distance, and reaction distance. |
D | Perception distance, reaction distance, and braking distance. |
Question 47 |
A | neither of these. |
B | the weight of the liquid. |
C | the legal weight limits. |
D | both of these. |
Question 48 |
A | under-inflated tires, dual tires that touch |
B | poor-quality retreads, under-inflated tires |
C | dual tires that touch, hot road surfaces |
D | over-heated brakes, under-inflated tires |
Question 49 |
A | turn wide before you start the turn |
B | start the turn, then back up to re-position |
C | turn wide as you complete the turn |
D | turn right and drive over the curb |
Question 50 |
A | Judgment and self-control are the first to be affected. |
B | Muscle control and coordination are affected. |
C | The drinker's brain is increasingly affected. |
D | All of these things happen. |
← | List | → |
1 | 2 | 3 | 4 | 5 |
6 | 7 | 8 | 9 | 10 |
11 | 12 | 13 | 14 | 15 |
16 | 17 | 18 | 19 | 20 |
21 | 22 | 23 | 24 | 25 |
26 | 27 | 28 | 29 | 30 |
31 | 32 | 33 | 34 | 35 |
36 | 37 | 38 | 39 | 40 |
41 | 42 | 43 | 44 | 45 |
46 | 47 | 48 | 49 | 50 |
End |
Remember, the General Knowledge Practice Test doesn’t reveal the correct answers until the test is over. The questions and answers are given in random order each time you retake the test. When you are finished testing, simply click on the “Get Results” button to see your test results. Clicking on the blue “List” button will reveal a list of all the questions you answered correctly and incorrectly. To take the test again, just refresh your browser window.
Press the start button to begin your free General Knowledge Practice Test. Good luck!
General Knowledge CDL Practice Test
Question 1 |
A | rust |
B | rubbing |
C | leaks |
D | burning |
Question 2 |
A | None of these fires can be safely extinguished by water. |
B | Grease fire. |
C | Electrical fire. |
D | Gasoline fire. |
Question 3 |
A | the lug nut is loose. |
B | the wheel needs cleaning. |
C | the lug nut is cheap. |
D | the lug nut needs to be replaced. |
Question 4 |
A | make sure you are driving slow enough so you can stop within the range of your headlights in case of an emergency. |
B | keep your high beams on at all times. |
C | drink coffee or other caffeine products to help keep you awake. |
D | roll down your window so that the fresh air will help keep you awake. |
Question 5 |
A | both loose fuel connections and under inflated tires |
B | overinflated tires |
C | underinflated tires |
D | loose fuel connections |
Question 6 |
A | before going up a hill and before entering a curve. |
B | before starting down a hill and before going up a hill. |
C | before starting down a hill and before entering a curve. |
D | before starting down a hill and before entering a tunnel. |
Question 7 |
A | bad tires. |
B | driving too slow for road conditions. |
C | driving too fast for road conditions. |
D | poorly adjusted brakes. |
Question 8 |
A | a dry bulk tank should only be filled halfway. |
B | the load should not get wet. |
C | the load can catch fire easily. |
D | the load can shift. |
Question 9 |
A | the trailer is being hauled at high speed. |
B | the trailer is empty or lightly loaded. |
C | the trailer is out of brake adjustment. |
D | the trailer is fully loaded or very heavy. |
Question 10 |
A | you release pressure on the brake pedal and speed increases. |
B | you have to push harder and harder to get the same stopping power on a downgrade. |
C | there is a slight vibration when you press down on the brake pedal. |
D | the brake pedal feels firm when you apply pressure. |
Question 11 |
A | depends on the service brakes being in adjustment. |
B | decreases when the service breaks are hot. |
C | is not affected by the condition of the service brakes. |
D | increases when the service brakes are hot. |
Question 12 |
A | exempt from height restrictions. |
B | generally used when freight is carried part way by rail or ship. |
C | exempt from weight limit restrictions. |
D | exempt from hazardous materials restrictions. |
Question 13 |
A | Use a lower gear than you would use to climb the hill. |
B | Use a higher gear than you would use to climb the hill. |
C | Shift the truck into neutral and coast down the hill to save gas. |
D | Use the same gear you would use to climb the hill. |
Question 14 |
A | sunglasses |
B | mirrors |
C | rear view cameras |
D | rolled down windows |
Question 15 |
A | road conditions are excellent. |
B | you are driving on hilly, rural roads. |
C | the road is wet, icy, or snow covered. |
D | you are driving on the freeway. |
Question 16 |
A | two times |
B | three times |
C | half |
D | four times |
Question 17 |
A | Observation distance, reaction distance, and slowing distance. |
B | Perception distance, reaction distance, and braking distance. |
C | Perception distance, response distance, and reaction distance. |
D | Perception distance, slowing distance, and braking distance. |
Question 18 |
A | slap yourself in the face three times. |
B | roll down the windows. |
C | stop to sleep. |
D | turn up the radio. |
Question 19 |
A | dual tires that touch, hot road surfaces |
B | under-inflated tires, dual tires that touch |
C | over-heated brakes, under-inflated tires |
D | poor-quality retreads, under-inflated tires |
Question 20 |
A | Pump the brake pedal 5 times; push the pedal firmly 3 seconds; the pedal should not move. |
B | Pump the brake pedal 3 times; push the pedal firmly 5 seconds; the pedal should not move. |
C | Move forward slowly and push firmly on the brake pedal. |
D | Push the brake pedal firmly 5 seconds; listen for leaks. |
Question 21 |
A | Using a helper when backing up. |
B | Using turn signals, 4-way flashers, headlights, and the horn. |
C | Using your CB radio or cell phone to inform others. |
D | Using hand signals. |
Question 22 |
A | load is properly secured. |
B | placard numbers match the seal numbers. |
C | seal is secure. |
D | seal is authentic. |
Question 23 |
A | keep the cargo as close to the ground as possible. |
B | keep two hands firmly planted on the steering wheel at all times. |
C | check to make sure that the brakes are properly balanced. |
D | downshift into the turn. |
Question 24 |
A | to ensure safety for yourself, your passengers, and other drivers. |
B | to help ensure the vehicle will make it to your destination. |
C | because it is a requirement for all drivers. |
D | because law enforcement may inspect your vehicle on the road. |
Question 25 |
A | The same amount of space you would on a dry road. |
B | More space than is needed for ideal driving conditions. |
C | The same amount of space you would at night. |
D | One vehicle length for every 10,000 lb. of gross vehicle weight. |
Question 26 |
A | Load cargo weight evenly over all the axles. |
B | Load cargo toward the rear of the truck for easier unloading. |
C | Load more cargo toward the front of the truck for a full load. |
D | Load more weight over the drive axle for better traction. |
Question 27 |
A | you want to have time to act before it turns into an emergency. |
B | you want to avoid doing something all of a sudden. |
C | you want to have a plan to communicate the risk. |
D | it is a federal law. |
Question 28 |
A | The drinker's brain is increasingly affected. |
B | Judgment and self-control are the first to be affected. |
C | Muscle control and coordination are affected. |
D | All of these things happen. |
Question 29 |
A | The same amount of stopping distance. |
B | Shorter stopping distance. |
C | Greater stopping distance. |
D | It depends on what mood you are in at the time. |
Question 30 |
A | two |
B | three |
C | four |
D | one |
Question 31 |
A | Keep your low beam lights on. |
B | Put your warning devices out within 15 minutes. |
C | Turn on your 4-way emergency flashers to warn other drivers. |
D | Warn other drivers by using your left turn signal lights. |
Question 32 |
A | Downshift after you are in the curve. |
B | Turn on your four-way flashers as you approach the offramp. |
C | Slow to a safe speed before the curve. |
D | Nothing, because the posted speed limit for the offramp is usually 10 miles per hour below the safe speed limit for the offramp. |
Question 33 |
A | there is ice and snow, to prevent skidding. |
B | it is absolutely necessary. |
C | you will be parked for a short time. |
D | testing the trailer brakes after hooking up to a trailer. |
Question 34 |
A | start the turn, then back up to re-position |
B | turn wide as you complete the turn |
C | turn right and drive over the curb |
D | turn wide before you start the turn |
Question 35 |
A | the end of the kingpin is even with the top of the fifth wheel. |
B | it will be raised slightly when the tractor is backed under it. |
C | the kingpin is about 1¼ inches above the fifth wheel. |
D | the end of the kingpin is at waist level. |
Question 36 |
A | seven or more. |
B | three or more. |
C | five or more. |
D | none of these. |
Question 37 |
A | 5/32-inch in every major groove. |
B | 3/32-inch in every major groove. |
C | 4/32-inch in every major groove. |
D | 2/32-inch in every major groove. |
Question 38 |
A | To direct traffic away from you. |
B | To see the blind spots you can't see. |
C | To prevent others from distracting you. |
D | To watch for steering errors. |
Question 39 |
A | slidetracking. |
B | fishtailing. |
C | sidetracking. |
D | offtracking. |
Question 40 |
A | Play in the steering wheel of more than ten degrees (two inches on a 20-inch steering wheel). |
B | Play in the steering wheel of more than five degrees. |
C | Oil on the tie rod. |
D | Too many vertical stacks. |
Question 41 |
A | to make your vehicle look official. |
B | to combat terrorism. |
C | to warn others of hazardous materials. |
D | to avoid mixing hazmat with food. |
Question 42 |
A | A minimum of three. |
B | A minimum of one. |
C | A minimum of two. |
D | A minimum of four. |
Question 43 |
A | the legal weight limits. |
B | the weight of the liquid. |
C | both of these. |
D | neither of these. |
Question 44 |
A | use windshield washer fluid as coolant. |
B | check the coolant level of a hot engine. |
C | safely remove the radiator cap and add coolant while the engine is hot. |
D | use only water in the cooling system. |
Question 45 |
A | All of these are considered a hazard. |
B | A stopped transit bus. |
C | Pedestrians and bicyclists. |
D | Road construction zones. |
Question 46 |
A | if any problems occurred the last the time the vehicle was operated. |
B | whenever you stop to refuel. |
C | at least once a week. |
D | before operating the vehicle. |
Question 47 |
A | Because tank baffles are not always legal with outage. |
B | Because some liquids expand more than others when they get warm. |
C | Because some of the heaviest liquids don’t need any. |
D | Because it's good to know that information. |
Question 48 |
A | one half inch |
B | three inches |
C | two inches |
D | one inch |
Question 49 |
A | require greater stopping distance than full trucks |
B | have better traction when stopping than full trucks |
C | have the same stopping distance as full trucks |
D | need less space ahead than full trucks |
Question 50 |
A | vehicles, traffic signs |
B | tunnels, overpasses |
C | law enforcement officers, detours |
D | truck stops, gas stations |
← | List | → |
1 | 2 | 3 | 4 | 5 |
6 | 7 | 8 | 9 | 10 |
11 | 12 | 13 | 14 | 15 |
16 | 17 | 18 | 19 | 20 |
21 | 22 | 23 | 24 | 25 |
26 | 27 | 28 | 29 | 30 |
31 | 32 | 33 | 34 | 35 |
36 | 37 | 38 | 39 | 40 |
41 | 42 | 43 | 44 | 45 |
46 | 47 | 48 | 49 | 50 |
End |
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