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