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
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 | 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 2 |
A | the legal weight limits. |
B | the weight of the liquid. |
C | both of these. |
D | neither of these. |
Question 3 |
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 4 |
A | need less space ahead than full trucks |
B | require greater stopping distance than full trucks |
C | have the same stopping distance as full trucks |
D | have better traction when stopping than full trucks |
Question 5 |
A | because it is a requirement for all drivers. |
B | because law enforcement may inspect your vehicle on the road. |
C | to help ensure the vehicle will make it to your destination. |
D | to ensure safety for yourself, your passengers, and other drivers. |
Question 6 |
A | seven or more. |
B | three or more. |
C | none of these. |
D | five or more. |
Question 7 |
A | the lug nut needs to be replaced. |
B | the lug nut is loose. |
C | the wheel needs cleaning. |
D | the lug nut is cheap. |
Question 8 |
A | rear view cameras |
B | sunglasses |
C | rolled down windows |
D | mirrors |
Question 9 |
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 10 |
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 11 |
A | 2/32-inch in every major groove. |
B | 4/32-inch in every major groove. |
C | 3/32-inch in every major groove. |
D | 5/32-inch in every major groove. |
Question 12 |
A | A minimum of two. |
B | A minimum of three. |
C | A minimum of four. |
D | A minimum of one. |
Question 13 |
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 14 |
A | Gasoline fire. |
B | Electrical fire. |
C | None of these fires can be safely extinguished by water. |
D | Grease fire. |
Question 15 |
A | stop to sleep. |
B | slap yourself in the face three times. |
C | roll down the windows. |
D | turn up the radio. |
Question 16 |
A | load is properly secured. |
B | seal is secure. |
C | placard numbers match the seal numbers. |
D | seal is authentic. |
Question 17 |
A | To watch for steering errors. |
B | To direct traffic away from you. |
C | To prevent others from distracting you. |
D | To see the blind spots you can't see. |
Question 18 |
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 19 |
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 20 |
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 21 |
A | truck stops, gas stations |
B | tunnels, overpasses |
C | vehicles, traffic signs |
D | law enforcement officers, detours |
Question 22 |
A | one half inch |
B | one inch |
C | three inches |
D | two inches |
Question 23 |
A | you are driving on the freeway. |
B | you are driving on hilly, rural roads. |
C | road conditions are excellent. |
D | the road is wet, icy, or snow covered. |
Question 24 |
A | check to make sure that the brakes are properly balanced. |
B | downshift into the turn. |
C | keep two hands firmly planted on the steering wheel at all times. |
D | keep the cargo as close to the ground as possible. |
Question 25 |
A | poorly adjusted brakes. |
B | driving too slow for road conditions. |
C | driving too fast for road conditions. |
D | bad tires. |
Question 26 |
A | slidetracking. |
B | sidetracking. |
C | offtracking. |
D | fishtailing. |
Question 27 |
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 28 |
A | two |
B | three |
C | four |
D | one |
Question 29 |
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 30 |
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 31 |
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 32 |
A | Because it's good to know that information. |
B | Because some of the heaviest liquids don’t need any. |
C | Because some liquids expand more than others when they get warm. |
D | Because tank baffles are not always legal with outage. |
Question 33 |
A | Using your CB radio or cell phone to inform others. |
B | Using turn signals, 4-way flashers, headlights, and the horn. |
C | Using hand signals. |
D | Using a helper when backing up. |
Question 34 |
A | Muscle control and coordination are affected. |
B | Judgment and self-control are the first to be affected. |
C | All of these things happen. |
D | The drinker's brain is increasingly affected. |
Question 35 |
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 36 |
A | to combat terrorism. |
B | to make your vehicle look official. |
C | to warn others of hazardous materials. |
D | to avoid mixing hazmat with food. |
Question 37 |
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 38 |
A | both loose fuel connections and under inflated tires |
B | eating spicy food in the truck cab |
C | under inflated tires |
D | loose fuel connections |
Question 39 |
A | The same amount of space you would on a dry road. |
B | One vehicle length for every 10,000 lb. of gross vehicle weight. |
C | The same amount of space you would at night. |
D | More space than is needed for ideal driving conditions. |
Question 40 |
A | leaks |
B | rubbing |
C | rust |
D | burning |
Question 41 |
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 42 |
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 43 |
A | you want to avoid doing something all of a sudden. |
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 | it is a federal law. |
Question 44 |
A | four times |
B | half |
C | three times |
D | two times |
Question 45 |
A | turn right and drive over the curb |
B | turn wide before you start the turn |
C | turn wide as you complete the turn |
D | start the turn, then back up to re-position |
Question 46 |
A | the kingpin is about 1¼ inches above the fifth wheel. |
B | the end of the kingpin is even with the top of the fifth wheel. |
C | the end of the kingpin is at waist level. |
D | it will be raised slightly when the tractor is backed under it. |
Question 47 |
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 48 |
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 49 |
A | A stopped transit bus. |
B | Road construction zones. |
C | Pedestrians and bicyclists. |
D | All of these are considered a hazard. |
Question 50 |
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 going up a hill and before entering a curve. |
D | before starting down a hill and before entering a tunnel. |
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| 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 | loose fuel connections |
B | overinflated tires |
C | underinflated tires |
D | both loose fuel connections and under inflated tires |
Question 2 |
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 3 |
A | A minimum of four. |
B | A minimum of three. |
C | A minimum of one. |
D | A minimum of two. |
Question 4 |
A | dual tires that touch, hot road surfaces |
B | under-inflated tires, dual tires that touch |
C | poor-quality retreads, under-inflated tires |
D | over-heated brakes, under-inflated tires |
Question 5 |
A | have the same stopping distance as full trucks |
B | require greater stopping distance than full trucks |
C | have better traction when stopping than full trucks |
D | need less space ahead than full trucks
|
Question 6 |
A | rubbing |
B | burning |
C | leaks |
D | rust |
Question 7 |
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 | Oil on the tie rod. |
D | Too many vertical stacks. |
Question 8 |
A | Use the same gear 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 a lower gear than you would use to climb the hill. |
Question 9 |
A | To watch for steering errors. |
B | To direct traffic away from you. |
C | To prevent others from distracting you. |
D | To see the blind spots you can't see. |
Question 10 |
A | one |
B | four |
C | three |
D | two |
Question 11 |
A | placard numbers match the seal numbers. |
B | load is properly secured. |
C | seal is authentic. |
D | seal is secure. |
Question 12 |
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 13 |
A | three or more. |
B | five or more. |
C | seven or more. |
D | none of these. |
Question 14 |
A | Grease fire. |
B | Electrical fire. |
C | None of these fires can be safely extinguished by water. |
D | Gasoline fire. |
Question 15 |
A | depends on the service brakes being in adjustment. |
B | decreases when the service breaks are hot. |
C | increases when the service brakes are hot. |
D | is not affected by the condition of the service brakes. |
Question 16 |
A | Using hand signals. |
B | Using a helper when backing up. |
C | Using turn signals, 4-way flashers, headlights, and the horn. |
D | Using your CB radio or cell phone to inform others. |
Question 17 |
A | turn wide as you complete the turn |
B | start the turn, then back up to re-position |
C | turn wide before you start the turn |
D | turn right and drive over the curb |
Question 18 |
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 19 |
A | to avoid mixing hazmat with food. |
B | to combat terrorism. |
C | to warn others of hazardous materials. |
D | to make your vehicle look official. |
Question 20 |
A | fishtailing. |
B | offtracking. |
C | slidetracking. |
D | sidetracking. |
Question 21 |
A | the load can catch fire easily. |
B | the load can shift. |
C | a dry bulk tank should only be filled halfway. |
D | the load should not get wet. |
Question 22 |
A | Perception distance, reaction distance, and braking distance. |
B | Perception distance, slowing distance, and braking distance. |
C | Observation distance, reaction distance, and slowing distance. |
D | Perception distance, response distance, and reaction distance. |
Question 23 |
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 24 |
A | to help ensure the vehicle will make it to your destination. |
B | to ensure safety for yourself, your passengers, and other drivers. |
C | because law enforcement may inspect your vehicle on the road. |
D | because it is a requirement for all drivers. |
Question 25 |
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 26 |
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 27 |
A | four times |
B | three times |
C | half |
D | two times |
Question 28 |
A | there is a slight vibration when you press down on the brake pedal. |
B | you release pressure on the brake pedal and speed increases. |
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 29 |
A | Because some of the heaviest liquids don’t need any. |
B | Because some liquids expand more than others when they get warm. |
C | Because it's good to know that information. |
D | Because tank baffles are not always legal with outage. |
Question 30 |
A | downshift into the turn. |
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 | keep the cargo as close to the ground as possible. |
Question 31 |
A | The same amount of space you would at night. |
B | One vehicle length for every 10,000 lb. of gross vehicle weight. |
C | More space than is needed for ideal driving conditions. |
D | The same amount of space you would on a dry road. |
Question 32 |
A | you are driving on hilly, rural roads. |
B | road conditions are excellent. |
C | the road is wet, icy, or snow covered. |
D | you are driving on the freeway. |
Question 33 |
A | the lug nut is cheap. |
B | the lug nut needs to be replaced. |
C | the lug nut is loose. |
D | the wheel needs cleaning. |
Question 34 |
A | one inch |
B | one half inch |
C | two inches |
D | three inches |
Question 35 |
A | before going up a hill and before entering a curve. |
B | before starting down a hill and before entering a tunnel. |
C | before starting down a hill and before going up a hill. |
D | before starting down a hill and before entering a curve. |
Question 36 |
A | Pump the brake pedal 5 times; push the pedal firmly 3 seconds; the pedal should not move. |
B | Pump the brake pedal 3 times; push the pedal firmly 5 seconds; the pedal should not move. |
C | Move forward slowly and push firmly on the brake pedal. |
D | Push the brake pedal firmly 5 seconds; listen for leaks. |
Question 37 |
A | law enforcement officers, detours |
B | vehicles, traffic signs |
C | truck stops, gas stations |
D | tunnels, overpasses |
Question 38 |
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 39 |
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 40 |
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 | Turn on your four-way flashers as you approach the offramp. |
C | Slow to a safe speed before the curve. |
D | Downshift after you are in the curve. |
Question 41 |
A | driving too fast for road conditions. |
B | driving too slow for road conditions. |
C | poorly adjusted brakes. |
D | bad tires. |
Question 42 |
A | sunglasses |
B | rear view cameras |
C | mirrors |
D | rolled down windows |
Question 43 |
A | Road construction zones. |
B | Pedestrians and bicyclists. |
C | A stopped transit bus. |
D | All of these are considered a hazard. |
Question 44 |
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 45 |
A | Load cargo toward the rear of the truck for easier unloading. |
B | Load cargo weight evenly over all the axles. |
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 46 |
A | the trailer is empty or lightly loaded. |
B | the trailer is fully loaded or very heavy. |
C | the trailer is being hauled at high speed. |
D | the trailer is out of brake adjustment. |
Question 47 |
A | roll down the windows. |
B | stop to sleep. |
C | slap yourself in the face three times. |
D | turn up the radio. |
Question 48 |
A | The same amount of stopping distance. |
B | Greater stopping distance. |
C | Shorter stopping distance. |
D | It depends on what mood you are in at the time. |
Question 49 |
A | the legal weight limits. |
B | neither of these. |
C | the weight of the liquid. |
D | both of these. |
Question 50 |
A | exempt from weight limit restrictions. |
B | exempt from hazardous materials restrictions. |
C | generally used when freight is carried part way by rail or ship. |
D | exempt from height restrictions. |
← |
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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