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