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