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