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