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