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