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