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