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