California Class B Driving Permit Practice Test

These questions are part of the practice quiz. Start practicing

• How can you identify the vehicle's maximum gross vehicle weight rating (GVWR)?
• Why should you take extra care to keep your vehicle centered in your lane?
• Which vehicle category is listed with an endorsement under Class B privileges?
• To assess the tightness of which component by pressing on it?
• Under Class B driving privileges, which vehicle configuration qualifies?
• What is the meaning of a solid yellow line for a Class B driver, in terms of passing?
• If a driver ahead of you has stopped at a crosswalk, you should :
• Name the two kinds of retarders.
• What 3 things add up to the total stopping distance of your vehicle?
• Where must the shipping papers be for a vehicle with a hazard placard if the driver is out of the vehicle?
• What is the primary reason no-zones around large trucks are dangerous?
• You are driving a 10-foot vehicle at 35 mph on a dry, visible road. What is the least space you should keep in front of your vehicle?
• Backing a commercial vehicle is described as?
• When starting your vehicle in motion from a stop, your wheels start to spin. What should you do?
• If you encounter a hazardous materials fire and you are not trained, what should you do?
• Gross combination weight (GCW) is the total weight of which components?
• If the drive wheels have poor traction, retarders may cause _______.
• Brake shoes should not have which substance on them?
• What is the purpose of a pre-trip inspection on a Class B vehicle?
• What are the reasons for performing a post-trip inspection?
• You will more easily spot a hazard ahead of you keep your eyes:
• With riders aboard, you may not fuel your bus where?
• Signaling devices must be in what two conditions?
• Which lights cannot be checked for functionality at the same time?
• Which statement best describes how vehicle weight affects stopping distance for a Class B vehicle?
• Stab braking is performed by which sequence?
• How should you check for leaks during an air brake system test?
• Signing the application form indicates consent to which of the following?
• Which sensation describes a tire blowout at highway speed?
• What are the primary signs that brakes might be fading or failing?
• Which vehicle requires a longer braking distance to stop at 55 mph?
• The ratio describing how much longer the braking distance is for a tractor-trailer compared to a car is:
• What is the correct procedure for approaching a roundabout?
• Which option describes the use of tarps or nets when securing a loose load?
• For a first offense DUI, how long will the CDL be suspended at minimum?
• When passing another vehicle, pedestrian, or bicyclist, assume that they what?
• Which item is NOT checked during a pre-trip air brake inspection?
• Maximum axle weights are set by a _________ formula
• If there is a crosswalk at a stop sign corner, you must stop at:
• During a pre-trip air brake inspection, which of the following is included among the warning devices?
• What is the primary purpose of truck escape ramps on long grades?
• If you don't know how to extinguish a hazardous materials fire, you should?
• What is the effect of high crosswinds on a Class B vehicle?
• What is a reason not to rely on the parking brake during long descents?
• At railroad crossings, drivers should stop how far before the nearest track?
• Merging into a road is safest if you wait for a large enough gap in traffic to enter the road.
• Dual tires should not _________ each other.
• Which drugs can you use while driving?
• During an air brake system test, which checks should you perform?
• How should you react to a flashing red signal?
• To determine a person's blood alcohol concentration, you must know how much the person weighs.
• If the previous driver noted defects on the vehicle inspection report, what documentation action is required of you?
• Total stopping distance is the sum of which distances?
• Gross combination weight (GCW) is the total weight of which components?
• What is the recommended practice when preparing to pass a cyclist?
• What is the purpose of the clearance requirement for Class B vehicles?
• When warning other drivers of a stopped vehicle, you should?
• Which of the following best describes cargo securing equipment usage?
• What steps should you take if the low air pressure warning comes on while driving?
• What is countersteering?
• During what hours do most heavy vehicle accidents occur?
• What should you do if you notice a leak in the air brake system while driving?
• Wet brakes can cause which unstable trailer behavior?
• Which statement correctly describes a straight vehicle?
• Within how many days must you notify the DMV if you sell or transfer your vehicle?
• A driver should look _________ seconds ahead while driving.
• When should cargo remain secured on a Class B vehicle?
• Which of the following actions is recommended in a work zone hazard?
• What is the correct action when you encounter a stop sign on a grade?
• Which factor determines the maximum weight allowed per axle?
• Dry bulk tank loads can ______ during transport.
• How should you position your vehicle near pedestrians and bicyclists?
• While the vehicle is stopped, the ________ should be tested.
• How should you respond to a no-passing zone for a heavy vehicle?
• What is the correct action when a bus is stopped to load or unload passengers with a passenger endorsement?
• One should limit the use of their horn because?
• Cargo weight can change what aspect of your vehicle?
• If you need to leave the road in a traffic emergency, when should you begin braking?
• For a corner with a stop sign, what is the correct stopping point?
• When approaching a corner with a stop sign, you must stop at the crosswalk.
• Which condition is associated with the use of retarders on a vehicle with poor drive-wheel traction?
• What does the low air pressure warning indicate?
• What is 'off tracking' in commercial driving?
• Why should you not use the parking brake as a substitute for regular braking?
• Containerized loads are generally used in which scenario?
• What is 'controlled braking'?
• What sensation is commonly felt when a tire blows out at highway speeds?
• A 4-in diamond shaped hazardous materials label must be in the container when?
• What is the function of the air brake governor?
• When must you perform cargo securement checks?
• What should you do if you approach a vehicle that is signaling to turn and is in your blind spot?
• To turn quickly, you must have a ________ on the ________.
• To merge safely onto a highway, you should do what?
• What should you do if you cannot see behind while backing a Class B vehicle?
• When temperatures drop, which structure tends to freeze before road surfaces?
• What are the recommended steps for securing a loose load on a Class B vehicle?
• When must you complete a vehicle inspection report and sign?
• Where should you stop at a corner with a stop sign?
• Why is proper weight distribution important in a loaded Class B vehicle?
• How should you handle a steering wheel pulling to one side?
• Poor trailer ventilation can cause cargo to ________.
• During a pre-trip inspection, which areas should be checked for safety defects?
• Which party must receive notice of an out-of-state conviction from a commercial driver?
• Under hazmat rules, you may operate a vehicle transporting hazardous material without hazmat endorsement only if the vehicle does not require placards.
• What shape of sign indicates a slow moving vehicle?
• When is it necessary to take breaks to avoid fatigue on long trips?
• How should you respond to hazard signs and signals in work zones?
• Signaling devices must be in _________ and _________ condition.
• Which set of lights is typically tested as a group when checking vehicle lighting functionality?
• Drunk drivers are involved in approx ___________ of California's data traffic crashes
• Why is it important to use a lower gear on a downgrade?
• What is the purpose of retarders?
• Why are large trucks’ blind spots called no-zones?
• Which part must have the right amount of oil to help prevent overheating in hot weather?
• Backing a commercial vehicle is described as which of the following?
• What are the dangers of overloading or improperly loading a Class B vehicle?
• You should adjust your mirrors while turning because?
• How can you tell if a vehicle uses air brakes and what must you consider for it?
• Why should you signal continuously when turning?
• If your brakes are wet, what may happen when braking?
• Cargo loads can be?
• What does not affect your choice of gears?
• Which documents are required to operate a Class B commercial vehicle in California?
• What is the Move Over law and its relevance to heavy vehicle drivers in California?
• What is the purpose of the emergency brake in air brake-equipped vehicles?
• Dry bulk tank loads can ________ during transport
• What is the purpose of tire chains on snow-covered roads for Class B vehicles, and when are they required?
• How should you perform a proper lane change in a commercial vehicle?
• What are the key factors that affect stopping distance for a Class B vehicle?
• Why is a broken exhaust system dangerous?
• Who is affected by alcohol?
• Why is maintaining proper tire inflation important for Class B vehicles?
• Which is the proper stopping practice at a corner with a stop sign?
• What is the proper braking technique after the vehicle is in low gear?
• With riders aboard, you may not fuel your bus where?
• The braking effect of the engine is near the governed RPMs, and the transmission should be in which gears?
• Fish tailing wheels may be a sign of?
• The typical time window for many heavy vehicle crashes is between which hours?
• You are driving a heavy vehicle and must exit a highway using a downhill off-ramp that curves. What should you do before the curve?
• Which gauge rises to normal after starting the engine?
• What is a "straight vehicle"?
• What is the recommended practice when following a cyclist?
• In an emergency leaving the roadway, at roughly what speed should you start braking?
• Which statement best describes the braking distance relationship at 55 mph between a tractor-trailer and a car?
• Which tire condition should you avoid using on a vehicle?
• The posted speed limit is 65 mph. A vehicle transporting explosives may travel no faster than ________ mph, weather permitting.
• Which hand position is recommended for steering during steady driving?
• How often should you inspect your tires for wear and damage?
• How many seconds ahead should you look to anticipate hazards?
• Which statement best describes controlled braking?
• Which of the following is included as a Class B vehicle configuration?
• If you come upon an accident scene and you do not have a CB radio, what should you do?
• At 55 mph, a tractor-trailer requires how many times the braking distance of a typical automobile to stop?
• What is the safe driving practice when approaching a railroad crossing?
• Where should you stop when you reach a corner that has a stop sign?
• When a tire blows on a straight highway, which action should you take to maintain control?
• What should you do if you encounter a vehicle with a load that is not secure?
• For a first offense of driving a commercial vehicle under the influence, you will lose your CDL for at least how long?
• When is a 4-inch diamond-shaped hazardous materials label required?
• If you are stopped and want to start driving uphill, you should?
• What should you do when you see a pedestrian in a crosswalk?
• What is the correct action when a school bus stops on a two-lane road with flashing lights?
• Which factor does not affect your choice of gears?
• A load extending to the left by 1 foot or more requires what signaling on the extreme left?
• What is the first thing you should do if your brakes fail while driving downhill?
• What is a potential hazard of a broken exhaust system in a vehicle?
• If a straight vehicle goes into a front wheel skid, it will?
• What shape sign indicates slow moving vehicles ahead?
• After starting the engine, the ____________ gradually rises to normal.
• The key principle in balancing cargo weight is to keep the load ________.
• What should you do if signals or barriers require stopping at a railroad crossing?
• When should you activate your turn signal during a lane change or turning maneuver?
• What is a key purpose of performing a post-trip inspection for the next trip?
• What must you inspect every two hours or 100 miles?
• How many missing or broken leaves in any leaf spring will cause a commercial vehicle to be placed out of service?
• A load that extends to the left by 1 foot or more must have an amber light on the extreme left side of the load.
• Which components should be checked during a pre-trip air brake inspection?
• What is the GVWR?
• If hydraulic brakes fail, what should you do?
• At 45 mph with an 80-foot vehicle in good weather, what is the least amount of space you should keep in front of you?
• What is the correct action to take when approaching a roundabout with heavy traffic?
• Which statement about hazmat endorsements and placards is true?
• The braking distance of a tractor-trailer at 55 mph relative to a car is which of the following?
• Commercial drivers must notify their employers of an out of state conviction within __________ days.
• At railroad crossings, the stopping distance is which range?
• When double clutching and shifting you can use the tachometer.
• Which action is part of performing a proper lane change?
• You are driving on a straight level highway at 50 mph with no vehicles in front of you when a tire blows. What should you do?
• If the shoulder is clear and you must re-enter traffic after moving onto the shoulder, how should you do it?
• Stab braking is defined as which of the following?
• Engine braking is most effective when the transmission is in lower gears and the engine is near the governed RPMs. Which statement is correct?
• What are potential consequences of improper weight distribution in a loaded Class B vehicle?
• How do you maintain safe following distance for a heavy vehicle?
• Which gear position maximizes engine braking during downhill driving?
• Brakes absorb more ______ to stop heavier or faster vehicles?
• Optional safety equipment may include emergency phone numbers, tire chains, and which item?
• Which describes the function of retarders in heavy vehicle operation?
• If your bus leans toward the outside on a banked curve, this indicates you are driving:
• At highway speed, how far ahead should you look?
• How can you improve fuel efficiency while driving a Class B vehicle?
• Which type of vehicle is described as able to carry 10 or more people?
• The braking distance requirement at 55 mph states that the tractor-trailer needs twice as much stopping distance as a car. Which option correctly reflects this?
• If the vehicle uses air brakes, what endorsement might be required?
• When approaching a hazard, it is quicker to _________ than to ________.
• Which statement best describes the GVWR?
• What should you do if signals or barriers require stopping at a railroad crossing?
• If a coolant container is part of a pressurized system, you should check the coolant level with the engine hot.
• To start moving uphill from a stop, which action sequence is recommended?
• Which statement is true about stopping distance for heavy vehicles?
• What is the recommended procedure for braking on a downgrade?
• Signing the application form indicates consent to which of the following?
• Driving a truck with a manual transmission, what gear will you use for a steep downhill grade?
• What does a solid yellow line indicate for a Class B driver?
• What is the primary purpose of four-way emergency flashers when you are parked at night?
• In a tire blowout or tread separation, which steps should you take?
• On a descent with a manual transmission, why should you use a lower gear than you used going uphill?
• What should you do if you are being tailgated?
• Which instrument tells you when to shift gears?
• How do you properly back a Class B vehicle with a trailer?
• Under what condition are prescription drugs allowed while driving?
• What is the proper method to secure cargo on a Class B vehicle?
• Which system should receive extra attention during a winter weather inspection?
• When transporting hazardous materials, what must be displayed?
• Which symptom could indicate tire failure in a heavy vehicle?
• What should you do when your vehicle hydroplanes?
• Containerized loads are generally used when freight is carried partway by rail or ship.
• When parked on the side of the road at night, what must you do?
• True or false: The braking distance for a tractor-trailer at 55 mph is two times that of a typical automobile.
• When driving at night, how fast should you drive?
• How does vehicle weight affect stopping distance?
• What is the proper way to hold a steering wheel?
• What is the proper procedure at a stop sign on a grade?
• How should you handle an emergency when encountering a stalled vehicle on the roadway?
• During double clutching, which instrument helps you judge engine speed?
• How often must CDL medical certificates be renewed?
• If your bus leans toward the outside on a banked curve, you are driving ________.
• A steering wheel must have no more than __________ of play.
• Which statement about tire chains is true?
• Which statement about braking at 55 mph is correct?
• At 55 mph, which vehicle would you expect to stop with less distance?