Vermont CDL Permit Practice Test

These questions are part of the practice quiz. Start practicing

• Which of the following actions can cause brake systems to lose effectiveness?
• True or False: Engine braking is useful for controlling speed on downhill grades.
• What should drivers do when visibility is severely limited?
• What could be a consequence of not having enough tie downs for a load?
• What is the proper braking technique when your vehicle has anti-lock brakes?
• What is a method for testing hydraulic brakes?
• What is hydroplaning?
• What does the term "gross vehicle weight rating" (GVWR) mean?
• What does the term "road rage" refer to?
• What is a common reaction of drivers displaying road rage?
• What is required to operate a Class A vehicle?
• If a tire blows out, what should you do?
• What is a potential issue with overloading a vehicle?
• How often should you conduct a vehicle inspection?
• How should side mirrors be adjusted for safer driving?
• True or False: You should maintain a shorter following distance when driving at higher speeds.
• What is the function of the emergency line in a trailer?
• What is the difference between gross combination weight (GCW) and gross combination weight rating (GCWR)?
• What is the maximum time a Vermont CDL is valid before renewal is necessary?
• What is the minimum number of tie downs required for a 20-foot load?
• What is an air brake check?
• What types of vehicles are most likely to get stuck on a railroad-highway crossing?
• What does 'communicating' mean in safe driving?
• What should you do to safely merge onto the highway?
• What happens if the low air pressure warning signal does not activate?
• What is the recommended speed for negotiating a sharp curve in a commercial vehicle?
• True or False: It's acceptable to confront an aggressive driver to assert your position on the road.
• What is a "tandem axle"?
• What is the consequence of exceeding the maximum legal weight limit for a commercial vehicle?
• During a light check, what does the presence of a yellow ABS light indicate?
• What is the purpose of a Commercial Learner's Permit (CLP)?
• What type of inspection is performed during the road test for a CDL?
• What action is suggested when a vehicle begins to skid?
• What defines reaction distance?
• What do you check for when pulling gently on the trailer with the tractor?
• What is the maximum leakage rate for combination vehicles?
• What can wet brakes affect when driving?
• How is the tractor protection valve tested?
• When should you use low beam headlights?
• When should you check if your vehicle has anti-lock brakes?
• Are all vehicles with air brakes required to have a low pressure warning signal?
• What is one critical use of the parking brake?
• What is the maximum legal weight limit for a standard commercial vehicle in Vermont?
• What does a hazardous materials placard indicate?
• Are front wheel brakes effective under all driving conditions?
• Which of the following best describes spring brakes?
• What is an advantage of choosing to go right instead of left around an obstacle?
• How should you apply brakes when driving a vehicle with ABS?
• True or False: It is safe to leave your vehicle for a short time without using the parking brake.
• Is it mandatory to wear a seat belt while operating a commercial motor vehicle?
• Stopping is not always the safest action to take in an emergency. What is true about this statement?
• When should headlights be used while driving?
• What is meant by 'black ice'?
• For a 30 foot vehicle traveling at 55 mph, how much following distance should you maintain?
• What is a "pre-trip inspection"?
• What does the HAZMAT endorsement allow you to do?
• Should you use low beams whenever applicable while driving?
• What is the function of slack adjusters in a braking system?
• What is essential for maintaining a safe driving distance?
• What should you generally avoid doing if your vehicle's tire blows out?
• Which parts should be checked on the front of your vehicle during a trip inspection?
• What does the ABS light indicate when starting a vehicle?
• Why should you avoid using the trailer hand brake to correct a jackknifing trailer?
• What does the term "downshifting" refer to?
• Why should the trailer hand brake not be used while driving?
• What may result from insufficient weight on the front axles?
• What factors increase stopping distance for a commercial vehicle?
• What is the effect of driving with distracted attention?
• What should you do if your vehicle starts to skid?
• What is a recommended way to warn other drivers that you are slowing down?
• In which situation should you not use your turn signal?
• What does CDL stand for?
• What happens when you apply the trailer hand brake while moving the vehicle?
• On a long, steep downgrade, the use of brakes is primarily a supplement to what?
• Why is it important to check your mirrors frequently?
• What is important to remember about the service line pressure?
• Is it advisable to let air out of hot tires to normalize pressure?
• What could be considered an emergency situation requiring equipment use?
• What is the purpose of a proper following distance?
• Why are placards used on vehicles transporting hazardous materials?
• What is the importance of weight distribution in commercial vehicles?
• What occurs if the air pressure in the tractor protection valve is too low?
• What defines a dual air brake system?
• Why is it advisable to put the starter key in your pocket during inspection?
• How do you know if your vehicle is equipped with anti-lock brakes?
• What immediate action should you take after experiencing a tire blowout?
• What should a driver do if involved in an accident with a commercial vehicle?
• What function does the trailer air supply control serve?
• What is the procedure for handling a tire blowout?
• What is a common belief about the effects of cold medicine?
• What does GCWR stand for?
• In what situation should you always rely on your knowledge of placards?
• What is the primary function of turn signals?
• Why should you use chocks on a trailer not equipped with spring brakes when parked?
• How do you determine the following distance from your vehicle to the one in front of you?
• What is the purpose of the air intake heater in diesel engines?
• What is the requirement for wearing seat belts while driving a commercial vehicle?
• If you are away from your vehicle for a short time, what should you do regarding the parking brake?
• What does off tracking refer to in terms of vehicle movement?
• What are the potential results of failing to use a fire extinguisher in the required situations?
• How many seconds ahead should a driver look while driving to ensure safety?
• What is the purpose of an escape ramp?
• What should you do to prepare for a situation where your brakes might fail?
• What is the effect of alcohol on driving ability?
• What could it indicate if the brakes pull to one side?
• What is the proper way to signal a turn in a commercial vehicle?
• How much space should be between the upper and lower fifth wheel after coupling?
• What should you do if confronted by an aggressive driver?
• Which of the following items should be checked during a trip?
• What does the "two-second rule" refer to in driving?
• When are you required to stop at a railroad crossing?
• How can you identify if your trailer is equipped with anti-lock brakes?
• What is the primary function of a supply pressure gauge in a vehicle?
• When is it advisable to downshift a vehicle?
• When should drivers inspect their cargo?
• Why is it important to cover cargo?
• What should a driver do when approaching a yield sign?
• What distinguishes aggressive driving from road rage?
• What should a driver do if they encounter a warning sign for a steep hill?
• Which of the following is NOT a class of CDL license?
• In which conditions can the legal maximum weight pose a risk?
• What three components make up stopping distance?
• What is indicated if the tractor protection valve pops out?
• What is the main purpose of a safety belt?
• To prepare for driving, how much should you raise the landing gear?
• Which factor is critical when considering the Gross Combination Vehicle Weight Rating (GCVWR)?
• What is the penalty for driving without a valid CDL?
• What is one way to determine when to shift gears?
• What must be done to test the trailer emergency brakes?
• What advantage do anti-lock brakes provide?
• Why is it crucial to follow laws regarding seat belt use in a CMV?
• What is the most crucial hand signal to agree on between the driver and helper when backing up?
• How should you prepare for a trip to minimize distractions?
• What is braking distance?
• When are you allowed to use your handheld device while driving a CMV?
• Why is it important to be in the proper gear before starting down a hill?
• What is the significance of a "medical certificate" for CDL holders?
• Where are the shutoff valves typically located?
• Why is it important to be in the proper gear before starting down a hill?
• What is the heavy vehicle formula for timed interval following distance under 40 MPH?
• What are drivers responsible for regarding their cargo?
• What safety measure should be taken when loading or unloading a trailer?
• What is perception distance?
• On a one-way divided highway, how far apart should warning triangles be placed from the vehicle?
• What color should clearance lights be on the front of a truck?
• When is a "log book" required for commercial drivers?
• What is the minimum tread depth for the front tires of a truck?
• Should you increase your following distance if someone is tailgating you?
• Is it true or false that you should check if the fifth wheel is locked onto the kingpin by looking at the back of it?
• What is the importance of having a helper when backing up a vehicle?
• Which of the following are defects found in the suspension system?
• What should you do if you feel drowsy before driving?
• What might be a sign of road rage from another driver?
• If you encounter an aggressive driver while on the road, what should you do?
• How can drivers ensure compliance with cargo load regulations?
• How can you tell if your vehicle is equipped with anti-lock brakes?
• How long does it generally take to clear a single track?
• What are the four essential parts of a vehicle that must be checked during a pre-trip inspection?
• What is the minimum age requirement to apply for a CDL in Vermont?
• What must be checked before transporting a sealed load?
• What should be done if you suspect your brakes are fading?
• How often should the air tank be drained in a commercial vehicle?
• Which factors determine a safe speed down a steep grade?
• What must be demonstrated during a pre-trip inspection?
• What is the primary purpose of a pre-trip inspection?
• Why must air tanks be drained before driving?
• What is the maximum air leakage rate for single vehicles?
• What three kinds of emergency equipment must you have at all times?
• What types of vehicles do you need a Class B CDL to operate?
• What should you do when backing up a trailer?
• What is the recommended distance to maintain when following another vehicle?
• When turning suddenly while pulling doubles, which trailer is most likely to tip over?
• How is gross combination weight (GCW) defined?
• When is the use of a fire extinguisher typically required in a commercial vehicle?
• If you swing wide to the left when turning right, what is a possible consequence?
• What is the recommended following distance formula for heavy vehicles traveling above 40 MPH?
• What is the purpose of warning signs on the road?
• Which of the following actions is NOT recommended when encountering a skid?
• Which is NOT a function of the parking brake?
• When can you use a cell phone while in a commercial vehicle?
• Why is it important to perform a pre-trip inspection?
• What are two things you should look ahead for while driving?
• Which shutoff valves should remain closed?
• What is the maximum allowable blood alcohol concentration (BAC) for commercial drivers?
• Which component is controlled by the trailer hand brake?
• Why is it crucial to check air pressure gauges during a trip?
• Who is responsible for ensuring a commercial vehicle is safe to operate?
• What should you do if your brakes fail while driving?
• What does "jackknifing" refer to?
• What could happen if the trailer is too high when attempting to couple?
• What are "blind spots" in relation to a vehicle?
• How many reflective triangles are required to have on a commercial vehicle?
• What should you do if your brakes are overheating during a steep descent?
• What is the purpose of traffic signs?
• What is the minimum duration you must hold a CLP before applying for a CDL?
• What does the acronym "DOT" stand for?
• What should be the status of the shutoff valves on the trailer?
• What is the minimum tread depth required for all other tires (not the front)?
• Why should you use your horn while driving?
• When backing a trailer, what is the proper direction to turn the curved path?
• What method is used to test that the spring brakes engage automatically?
• What is a potential risk of using engine retarders?
• Why should you back toward the driver's side when maneuvering a trailer?
• What is the minimum requirement for a vehicle's safety triangle?
• How can you identify a distracted driver?
• Which component is part of the steering system in a truck?
• How can you test that air flows to all trailers?
• Which of the following is true regarding the use of air brakes?
• If the ABS system is not functioning, what remains intact?
• What is one way to prevent becoming a distracted driver?
• What are the different classes of CDL licenses in Vermont?
• What are spring brakes used for in a vehicle?
• How can you check the low air pressure warning signal?
• What is the proper color for front turn signals on a truck?
• Define "Safe following distance."
• At a corner, where should you place warning triangles for visibility?
• What is the purpose of the service line in a trailer?
• What is the procedure to test the trailer service brakes?
• What effect does poor brake condition have on a commercial vehicle?
• What is the effect of weather conditions on stopping distance?
• What is the meaning of "air brakes" in commercial driving?
• What is the best practice when driving in adverse weather conditions?
• What is the best way to manage speed when approaching a downhill gradient?
• What should you look for in the steering system during an inspection?
• What two key factors help prevent rollover in large vehicles?
• How many tie downs are required at a minimum for a flatbed?
• Does coffee help a drinker to sober up?
• What is the proper braking technique for descending a steep grade?
• What would be a serious defect in the suspension system?
• What does the acronym "GCVWR" stand for?
• What action should you take if you find yourself in front of an aggressive driver?
• What key steering parts should be checked in a truck?
• How does weather affect driving a commercial vehicle?
• What is the main purpose of the trailer hand brake?
• If you double your speed, how much will your stopping distance increase?
• True or False: You can drive a commercial vehicle with a suspended license.
• True or False: You can text while driving a commercial vehicle in Vermont.
• How long does it typically take a normal tractor and trailer to clear a double track?
• How is the trailer emergency brake activated?
• True or False: Engine braking is an effective method for controlling speed on downgrades.
• What is the law regarding sending text messages while operating a CMV in Vermont?
• What is a key factor that can compromise vehicle stability?
• What is the importance of knowing your vehicle's weight limits?
• Common medicines for colds can lead to drowsiness. True or False?
• Do empty trucks require more stopping distance than loaded ones?
• What is a critical requirement for air brake systems in vehicles?
• What does the term 'lowboys' refer to in the context of trailers?
• What is the significance of holding a valid CDL?
• What factors can lead to brake fade or failure?
• Which type of trailers are susceptible to getting stuck on railroad-highway crossings?
• Where should warning triangles be placed on a two-way divided highway?
• True or False: A CDL holder can drive a passenger vehicle without additional endorsements.
• What is the acronym "CMV" short for?
• What should you do if you notice a hydraulic brake pedal that sinks?