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