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
Congratulations! You have completed the General Knowledge CDL Practice Quiz.
You scored %%SCORE%% out of %%TOTAL%%.
Your performance has been rated as %%RATING%%
Pass your CDL Knowledge Exam the first time! Click here to get the Complete CDL Cheat Sheet Study Package for all 50 states! Question 1 |
A | placard numbers match the seal numbers. |
B | load is properly secured. |
C | seal is secure. |
D | seal is authentic. |
Question 2 |
A | Observation distance, reaction distance, and slowing distance. |
B | Perception distance, reaction distance, and braking distance. |
C | Perception distance, slowing distance, and braking distance. |
D | Perception distance, response distance, and reaction distance. |
Question 3 |
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 4 |
A | there is ice and snow, to prevent skidding. |
B | testing the trailer brakes after hooking up to a trailer. |
C | you will be parked for a short time. |
D | it is absolutely necessary. |
Question 5 |
A | Because some liquids expand more than others when they get warm. |
B | Because tank baffles are not always legal with outage. |
C | Because it's good to know that information. |
D | Because some of the heaviest liquids don’t need any. |
Question 6 |
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 7 |
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 8 |
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 9 |
A | three or more. |
B | five or more. |
C | seven or more. |
D | none of these. |
Question 10 |
A | the legal weight limits. |
B | the weight of the liquid. |
C | both of these. |
D | neither of these. |
Question 11 |
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 12 |
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 13 |
A | Electrical fire. |
B | Gasoline fire. |
C | None of these fires can be safely extinguished by water. |
D | Grease fire. |
Question 14 |
A | To see the blind spots you can't see. |
B | To watch for steering errors. |
C | To direct traffic away from you. |
D | To prevent others from distracting you. |
Question 15 |
A | slidetracking. |
B | fishtailing. |
C | sidetracking. |
D | offtracking. |
Question 16 |
A | increases when the service brakes are hot. |
B | decreases when the service breaks are hot. |
C | is not affected by the condition of the service brakes. |
D | depends on the service brakes being in adjustment. |
Question 17 |
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 18 |
A | Pedestrians and bicyclists. |
B | All of these are considered a hazard. |
C | Road construction zones. |
D | A stopped transit bus. |
Question 19 |
A | one half inch |
B | three inches |
C | two inches |
D | one inch |
Question 20 |
A | safely remove the radiator cap and add coolant while the engine is hot. |
B | check the coolant level of a hot engine. |
C | use windshield washer fluid as coolant. |
D | use only water in the cooling system. |
Question 21 |
A | the lug nut needs to be replaced. |
B | the lug nut is cheap. |
C | the wheel needs cleaning. |
D | the lug nut is loose. |
Question 22 |
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 23 |
A | the trailer is fully loaded or very heavy. |
B | the trailer is being hauled at high speed. |
C | the trailer is out of brake adjustment. |
D | the trailer is empty or lightly loaded. |
Question 24 |
A | Move forward slowly and push firmly on the brake pedal. |
B | Pump the brake pedal 5 times; push the pedal firmly 3 seconds; the pedal should not move. |
C | Pump the brake pedal 3 times; push the pedal firmly 5 seconds; the pedal should not move. |
D | Push the brake pedal firmly 5 seconds; listen for leaks. |
Question 25 |
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 26 |
A | slap yourself in the face three times. |
B | stop to sleep. |
C | turn up the radio. |
D | roll down the windows. |
Question 27 |
A | there is a slight vibration when you press down on the brake pedal. |
B | the brake pedal feels firm when you apply pressure. |
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 28 |
A | burning |
B | rubbing |
C | leaks |
D | rust |
Question 29 |
A | Using hand signals. |
B | Using your CB radio or cell phone to inform others. |
C | Using a helper when backing up. |
D | Using turn signals, 4-way flashers, headlights, and the horn. |
Question 30 |
A | three |
B | four |
C | one |
D | two |
Question 31 |
A | Play in the steering wheel of more than five degrees. |
B | Oil on the tie rod. |
C | Too many vertical stacks. |
D | Play in the steering wheel of more than ten degrees (two inches on a 20-inch steering wheel). |
Question 32 |
A | law enforcement officers, detours |
B | tunnels, overpasses |
C | truck stops, gas stations |
D | vehicles, traffic signs |
Question 33 |
A | before operating the vehicle. |
B | whenever you stop to refuel. |
C | at least once a week. |
D | if any problems occurred the last the time the vehicle was operated. |
Question 34 |
A | A minimum of three. |
B | A minimum of one. |
C | A minimum of two. |
D | A minimum of four. |
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 | Load more cargo toward the front of the truck for a full load. |
B | Load more weight over the drive axle for better traction. |
C | Load cargo weight evenly over all the axles. |
D | Load cargo toward the rear of the truck for easier unloading. |
Question 37 |
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 38 |
A | have better traction when stopping than full trucks |
B | need less space ahead than full trucks |
C | have the same stopping distance as full trucks |
D | require greater stopping distance than full trucks |
Question 39 |
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 40 |
A | you are driving on the freeway. |
B | road conditions are excellent. |
C | you are driving on hilly, rural roads. |
D | the road is wet, icy, or snow covered. |
Question 41 |
A | keep the cargo as close to the ground as possible. |
B | check to make sure that the brakes are properly balanced. |
C | keep two hands firmly planted on the steering wheel at all times. |
D | downshift into the turn. |
Question 42 |
A | driving too slow for road conditions. |
B | bad tires. |
C | driving too fast for road conditions. |
D | poorly adjusted brakes. |
Question 43 |
A | generally used when freight is carried part way by rail or ship. |
B | exempt from hazardous materials restrictions. |
C | exempt from weight limit restrictions. |
D | exempt from height restrictions. |
Question 44 |
A | 5/32-inch in every major groove. |
B | 4/32-inch in every major groove. |
C | 3/32-inch in every major groove. |
D | 2/32-inch in every major groove. |
Question 45 |
A | sunglasses |
B | rear view cameras |
C | mirrors |
D | rolled down windows |
Question 46 |
A | it is a federal law. |
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 | you want to avoid doing something all of a sudden. |
Question 47 |
A | four times |
B | half |
C | two times |
D | three times |
Question 48 |
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 49 |
A | under inflated tires |
B | loose fuel connections |
C | both loose fuel connections and under inflated tires |
D | eating spicy food in the truck cab |
Question 50 |
A | it will be raised slightly when the tractor is backed under it. |
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 | the end of the kingpin is at waist level. |
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| 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
Congratulations! You have completed the General Knowledge CDL Practice Test.
You scored %%SCORE%% out of %%TOTAL%%.
Your performance has been rated as %%RATING%%
Pass your CDL Knowledge Exam the first time! Click here to get the Complete CDL Cheat Sheet Study Package for all 50 states! Question 1 |
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 2 |
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 3 |
A | need less space ahead than full trucks
|
B | have the same stopping distance as full trucks |
C | require greater stopping distance than full trucks |
D | have better traction when stopping than full trucks |
Question 4 |
A | Because some liquids expand more than others when they get warm. |
B | Because it's good to know that information. |
C | Because some of the heaviest liquids don’t need any. |
D | Because tank baffles are not always legal with outage. |
Question 5 |
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 6 |
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 7 |
A | Pedestrians and bicyclists. |
B | A stopped transit bus. |
C | All of these are considered a hazard. |
D | Road construction zones. |
Question 8 |
A | Shorter stopping distance. |
B | The same amount of stopping distance. |
C | Greater stopping distance. |
D | It depends on what mood you are in at the time. |
Question 9 |
A | the end of the kingpin is at waist level. |
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 even with the top of the fifth wheel. |
Question 10 |
A | Play in the steering wheel of more than ten degrees (two inches on a 20-inch steering wheel). |
B | Too many vertical stacks. |
C | Oil on the tie rod. |
D | Play in the steering wheel of more than five degrees. |
Question 11 |
A | mirrors |
B | rear view cameras |
C | rolled down windows |
D | sunglasses |
Question 12 |
A | three |
B | two |
C | four |
D | one |
Question 13 |
A | To direct traffic away from you. |
B | To prevent others from distracting you. |
C | To see the blind spots you can't see. |
D | To watch for steering errors. |
Question 14 |
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 | the brake pedal feels firm when you apply pressure. |
D | you release pressure on the brake pedal and speed increases. |
Question 15 |
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 | 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 16 |
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 17 |
A | None of these fires can be safely extinguished by water. |
B | Gasoline fire. |
C | Electrical fire. |
D | Grease fire. |
Question 18 |
A | you want to avoid doing something all of a sudden. |
B | it is a federal law. |
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 19 |
A | three times |
B | half |
C | two times |
D | four times |
Question 20 |
A | Perception distance, response distance, and reaction distance. |
B | Perception distance, reaction distance, and braking distance. |
C | Observation distance, reaction distance, and slowing distance. |
D | Perception distance, slowing distance, and braking distance. |
Question 21 |
A | loose fuel connections |
B | underinflated tires |
C | both loose fuel connections and under inflated tires |
D | overinflated tires |
Question 22 |
A | rust |
B | leaks |
C | rubbing |
D | burning |
Question 23 |
A | The same amount of space you would on a dry road. |
B | More space than is needed for ideal driving conditions. |
C | One vehicle length for every 10,000 lb. of gross vehicle weight. |
D | The same amount of space you would at night. |
Question 24 |
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 25 |
A | A minimum of one. |
B | A minimum of three. |
C | A minimum of four. |
D | A minimum of two. |
Question 26 |
A | the lug nut is loose. |
B | the wheel needs cleaning. |
C | the lug nut needs to be replaced. |
D | the lug nut is cheap. |
Question 27 |
A | neither of these. |
B | both of these. |
C | the legal weight limits. |
D | the weight of the liquid. |
Question 28 |
A | Judgment and self-control are the first to be affected. |
B | The drinker's brain is increasingly affected. |
C | Muscle control and coordination are affected. |
D | All of these things happen. |
Question 29 |
A | Using hand signals. |
B | Using your CB radio or cell phone to inform others. |
C | Using turn signals, 4-way flashers, headlights, and the horn. |
D | Using a helper when backing up. |
Question 30 |
A | whenever you stop to refuel. |
B | before operating the vehicle. |
C | if any problems occurred the last the time the vehicle was operated. |
D | at least once a week. |
Question 31 |
A | poor-quality retreads, under-inflated tires |
B | dual tires that touch, hot road surfaces |
C | over-heated brakes, under-inflated tires |
D | under-inflated tires, dual tires that touch |
Question 32 |
A | safely remove the radiator cap and add coolant while the engine is hot. |
B | check the coolant level of a hot engine. |
C | use only water in the cooling system. |
D | use windshield washer fluid as coolant. |
Question 33 |
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 34 |
A | poorly adjusted brakes. |
B | driving too fast for road conditions. |
C | bad tires. |
D | driving too slow for road conditions. |
Question 35 |
A | truck stops, gas stations |
B | vehicles, traffic signs |
C | law enforcement officers, detours |
D | tunnels, overpasses |
Question 36 |
A | offtracking. |
B | slidetracking. |
C | fishtailing. |
D | sidetracking. |
Question 37 |
A | none of these. |
B | five or more. |
C | three or more. |
D | seven or more. |
Question 38 |
A | load is properly secured. |
B | seal is authentic. |
C | seal is secure. |
D | placard numbers match the seal numbers. |
Question 39 |
A | decreases when the service breaks are hot. |
B | is not affected by the condition of the service brakes. |
C | depends on the service brakes being in adjustment. |
D | increases when the service brakes are hot. |
Question 40 |
A | testing the trailer brakes after hooking up to a trailer. |
B | you will be parked for a short time. |
C | there is ice and snow, to prevent skidding. |
D | it is absolutely necessary. |
Question 41 |
A | two inches |
B | one inch |
C | three inches |
D | one half inch |
Question 42 |
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 | make sure you are driving slow enough so you can stop within the range of your headlights in case of an emergency. |
D | drink coffee or other caffeine products to help keep you awake. |
Question 43 |
A | Keep your low beam lights on. |
B | Warn other drivers by using your left turn signal lights. |
C | Put your warning devices out within 15 minutes. |
D | Turn on your 4-way emergency flashers to warn other drivers. |
Question 44 |
A | stop to sleep. |
B | roll down the windows. |
C | turn up the radio. |
D | slap yourself in the face three times. |
Question 45 |
A | exempt from hazardous materials restrictions. |
B | exempt from height restrictions. |
C | exempt from weight limit restrictions. |
D | generally used when freight is carried part way by rail or ship. |
Question 46 |
A | keep the cargo as close to the ground as possible. |
B | downshift into the turn. |
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 47 |
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 48 |
A | the load can catch fire easily. |
B | a dry bulk tank should only be filled halfway. |
C | the load can shift. |
D | the load should not get wet. |
Question 49 |
A | Turn on your four-way flashers as you approach the offramp. |
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 | Downshift after you are in the curve. |
D | Slow to a safe speed before the curve. |
Question 50 |
A | before starting down a hill and before going up a hill. |
B | before starting down a hill and before entering a tunnel. |
C | before going up a hill and before entering a curve. |
D | before starting down a hill and before entering a curve. |
← |
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 |