Louisiana General Knowledge CDL Practice Test

These questions are part of the practice quiz. Start practicing

• What is one of the signs of an unsafe driving environment?
• What is the effect of a vehicle's weight on stopping distance?
• What should you do when approaching a curve in the road?
• What action should you take if you realize you are driving impaired?
• What does it mean if a commercial vehicle is "overweight"?
• At what speed must a business car yield to entering traffic?
• What does it mean to be in the "no zone"?
• Which document is needed to take the knowledge test for a CDL in Louisiana?
• What is the minimum age to obtain a Class B CDL?
• What is the significance of maintaining a safe following distance while driving a truck?
• How can a driver minimize skidding on ice?
• What may occur if a vehicle's load is all to the rear?
• What is the proper way to secure loads on a commercial vehicle?
• What information can be found on a vehicle's weight sticker?
• What should be checked in the vehicle's braking system during a pre-trip inspection?
• What is the primary purpose of the pre-trip inspection?
• What checks must be performed on a vehicle's air brake system?
• How does weight distribution affect the stability of a commercial vehicle?
• In terms of stability, how should cargo be loaded in a truck?
• How often should you check your vehicle's oil level?
• What should you do if you experience a tire blowout on the steering axle?
• What should be checked regarding tire conditions during a pre-trip inspection?
• What is the most effective method for handling a heavy load on a downhill grade?
• What is the proper speed to maintain during poor weather conditions?
• When must you use a seat belt in a commercial vehicle?
• What is one of the main causes of skidding?
• What is the recommended action when encountering strong winds while driving a truck?
• What factor can contribute to driving hazards during the night?
• What does "jackknifing" refer to in vehicle operation?
• Name one of the key components checked during a pre-trip inspection.
• Which fluid levels should be checked during a pre-trip inspection?
• What should you do if your vehicle is approaching an intersection and the traffic signal is yellow?
• What actions must a driver take when an emergency vehicle is approaching?
• What is the minimum tread depth allowed on steering tires?
• What is the maximum number of driving hours for a commercial driver in one day before needing a rest period?
• What is generally required for a commercial driver during a road test?
• If a roadside test reveals a BAC of .02, what will happen?
• How often must a CDL holder renew their medical certificate?
• What does the acronym "CDL" stand for?
• What is NOT a requirement for obtaining a CDL?
• How much time should a driver rest after 11 hours of driving?
• What should a driver inspect for proper functioning during a pre-trip inspection regarding lights?
• What is the recommended action if you encounter adverse weather conditions while driving?
• What is the first step in recovering from a driving emergency?
• What is the "no-zone" in relation to commercial driving?
• On a dry road, what is the recommended following distance?
• What is the standard procedure for merging onto a highway?
• How can a driver ensure their vehicle is roadworthy before a trip?
• Which statement about emergency steering is true?
• What should be done with the emergency equipment during pre-trip inspections?
• What does a "yield" sign indicate?
• Which dashboard gauge shows engine RPM?
• Why is it essential to maintain a steady speed while driving?
• What protective measure should be taken during poor visibility conditions?
• What is a major reason for performing a post-trip inspection?
• Who is responsible for conducting a pre-trip inspection on a commercial vehicle?
• What is the concept of "distraction-free driving"?
• Which of the following can always be said about empty trucks compared to loaded trucks?
• In Louisiana, what is required to operate a commercial vehicle with air brakes?
• What is a key benefit of using a "jake brake"?
• What action should a driver take when approaching a railroad crossing?
• Which of the following is NOT a component of a pre-trip inspection?
• What is the consequence of distracted driving?
• What does CDL stand for?
• In emergency situations, what should a driver prioritize regarding steering and stopping?
• What is the primary function of the safety valve in an air brake system?
• Within how many miles of beginning your trip are you required to inspect your truck?
• When is it permissible to pass on the right?
• What should you do if you see a pedestrian in a crosswalk?
• What should a driver do if confronted with aggressive driving from another vehicle?
• What should you do if driving a commercial vehicle over 13 feet in height and unsure about clearance?
• What should you do at a construction zone?
• On wet road conditions, by what fraction should you reduce your speed?
• Which is true regarding emergency driving?
• How far ahead should a driver be looking to ensure safety?
• In what scenario may a driver legally operate a commercial vehicle without a CDL?
• Which type of truck requires a longer stopping distance?
• What should a driver do if they experience brake failure while driving?
• Why is it important to keep a detailed log of driving hours?
• What should you avoid doing when approaching a curve?
• If you become sleepy while driving, what should you do?
• What should a driver do if they experience a tire blowout?
• What should you do when traveling down a downgrade?
• Why is adjusting driving habits in different weather conditions important?
• When is it acceptable for a driver to use a mobile phone while driving?
• What is one of the first actions to take if a tire blows out while driving?
• If your vehicle begins to hydroplane, what is the proper action to take?
• What is a common requirement for obtaining a CDL?
• Which driving technique is crucial for inclement weather?
• What should you do if an approaching vehicle begins to drift into your lane on a two-lane road?
• Which of the following is a requirement for a commercial driver's license (CDL)?
• What type of vehicle requires a Class A CDL?
• You are driving a 40-foot long vehicle at 25 mph. What is the proper safe following distance?
• During which weather condition should a driver be especially vigilant of changing road conditions?
• Are there different endorsements for various types of commercial vehicles?
• What are the two types of braking systems in commercial vehicles?
• What type of CVSA sticker indicates a vehicle passed inspection?
• What should you do if you experience a tire blowout while driving?
• Which of the following is a technique that should be used during controlled braking?
• What is the primary purpose of a pre-trip inspection?
• What does a "double" refer to in trucking terminology?
• Why is it important to maintain a safe following distance?
• What is the consequence of having too many valid CDL violations?
• How often must a Commercial Driver's License be renewed in Louisiana?
• How often must a CDL holder renew their license in Louisiana?
• When is it acceptable to exceed the speed limit?
• What is the purpose of reflective triangles in trucking?
• What should drivers do when they see a school bus with its stop sign extended?
• How does doubling your speed affect stopping distance?
• During the pre-trip inspection, where should the ignition key be?
• A jackknife will occur when the angle between the tractor and trailer reaches what percentage?
• When transporting flammable liquids, what precaution is important?
• At highway speeds, how far ahead should drivers look to ensure safety?
• Which item is NOT typically recorded in a driver’s daily log?
• How many red reflective triangles are you required to carry in your vehicle?
• What is the proper technique for checking blind spots?
• When driving, what is the proper eye-lead time?
• Which vehicle is likely to have the longest stopping distance?
• What document must be presented to obtain a CDL in Louisiana?
• What is the penalty for a first DUI offense for a CDL driver in Louisiana?
• How can you prevent fatigue while driving long distances?
• When should you consider shifting gears while driving?
• What percentage of a CDL applicant's knowledge test must be passed?
• What should a driver do if they receive a moving violation?
• What is the allowable Blood Alcohol Concentration (BAC) for CDL drivers in Louisiana?
• What information is essential to include in a driver’s daily log?
• What is the best way to approach a sharp curve while driving a truck?
• What is "following too closely" also known as?
• What is the proper hand position for holding a steering wheel?
• Which of the following helps improve a driver's visibility during rainy conditions?
• If your front wheels begin to skid, what is the most likely outcome?
• What safety feature should be present in the truck according to pre-trip inspection guidelines?
• What is the minimum tread depth required for tires on a commercial vehicle?
• What does a speedometer display?
• When doing your pre-trip inspection, what is the primary task you should perform?
• What is the minimum age to apply for a CDL in Louisiana?
• Upon arriving first at the scene of an accident, what should be your first action?
• What does hydroplaning refer to?
• What is "hydroplaning"?
• What is the purpose of the Commercial Driver’s License Information System (CDLIS)?
• What is the purpose of the “right turn squeeze play”?
• Which of the following is a requirement when driving in adverse weather conditions?
• What is the maximum BAC for commercial drivers operating a commercial vehicle?
• When are CDL drivers required to carry a medical certificate?
• If you experience a rear-wheel over acceleration skid, what action should you take?
• How should a driver respond to a vehicle skid?
• What should be done if you need to maintain a safe distance from other vehicles while driving?
• What is the purpose of the Louisiana Commercial Driver's License manual?
• Which of the following must be inspected for leaks during pre-trip inspections?
• What does a Tanker endorsement allow a driver to do?
• How often should a driver perform routine maintenance checks on their vehicle?
• When should stab braking be used?
• When are you required to use your headlights?
• What is one important factor to maintain fuel efficiency while driving?
• What is the minimum age to obtain a CDL in Louisiana?
• What is the recommended following distance when driving a 40-foot long vehicle at 50 MPH?
• What is the maximum weight limit for a standard single-axle truck in Louisiana?
• What is the safe method for downshifting in a curve?
• What factor increases the risk of rollovers in large trucks?
• In which situation is it mandatory to use a vehicle's reflective triangles?
• How should you position your body when backing up a truck?
• What should you verify regarding your load during pre-trip inspection?
• What is the effective braking distance at 60 mph on dry pavement?
• When should you test your parking brake?
• What type of vehicles requires a Class A CDL in Louisiana?
• Which item is NOT typically part of a pre-trip inspection?
• What is a recommended action when feeling drowsy while driving?
• How many steps are involved in the pre-trip inspection?
• What is one of the main purposes of performing pre-trip inspections?
• What must a CDL driver do after receiving any traffic violation?
• Which statement about speed management is true?
• If a fire ignites in your truck, what is a primary safety action to take?
• Name a common type of cargo that requires special handling during transport.
• Which statement about mirrors is true?
• What is an important factor to note about vehicle stopping distances on wet pavements?
• What does communication mean in driving?
• What are "blind spots" in driving?
• What is the most likely consequence for a first offense of driving under the influence in a commercial vehicle?
• What are the two types of jackknife?
• What is the minimum age requirement to apply for a Commercial Driver's License (CDL) in Louisiana?
• How should you handle a grade when driving downhill?
• What is the definition of a "Gross Vehicle Weight Rating"?
• What is the correct way to check your tire pressure?
• What are the dangers of using cruise control in bad weather?
• What is one of the primary functions of a vehicle's brake lights?
• What is the ideal response when encountering fog while driving?
• What is considered a serious traffic violation that can affect your CDL?
• What are common causes of truck fires?
• What should you check before loading cargo into a commercial vehicle?
• What is the primary function of the air brake system in a commercial vehicle?
• How much space should be maintained between a commercial vehicle and the vehicle in front while driving?
• When backing up a vehicle, what is the safest angle to approach a turn?
• Which of the following areas should NOT be a primary focus during a pre-trip inspection?
• What should you do if you encounter a construction zone?
• What should a driver do when approaching a foggy area?
• What should you do if your truck overheats while driving?
• What is one method to prevent cargo from shifting during transport?
• When transporting hazardous materials, what must drivers always have?
• How often must a commercial driver undergo a medical examination?
• What should be observed in the vehicle's lights during the pre-trip inspection?
• What happens if a CDL holder is caught driving with a BAC over the legal limit?
• When should turn signals be used?
• Which of the following is an important pre-trip inspection item?
• How can drivers maintain a safe distance from vehicles in front of them during poor weather conditions?
• How should you approach the vehicle during a pre-trip inspection?
• When driving down a long downgrade, what should you do?
• What should you do when you notice a vehicle approaching from the opposite direction in your lane?
• How can a driver identify if a load is too heavy?
• What is a common sign of brake fade?
• What is the recommended action when approaching a rail crossing?
• What should you do if your vehicle starts to hydroplane?
• How should a driver handle a situation with wildlife on the roadway?
• Which road surface is considered the slickest?
• When is it appropriate to use your high beams while driving?
• Which is an example of a visual inspection during a pre-trip inspection?
• During a pre-trip inspection, which area is crucial for ensuring safety?
• Which statement about the effects of alcohol is true?
• What does a solid yellow line indicate?
• What should you do if your vehicle starts to skid?
• What is a major cause of accidents in wet weather?
• Which of the following is NOT a type of CDL endorsement?
• What should you do to maintain control of your vehicle during a blowout?
• What should you do if your cargo shifts while driving?
• What is the maximum blood alcohol concentration (BAC) allowed for a CDL holder while operating a commercial vehicle?
• What does "overloading" a vehicle mean?
• What action should a driver take if they encounter a tire blowout?
• What is a common consequence of failing a pre-trip inspection?
• What does ABS stand for in reference to braking systems?
• What is the purpose of a "jake brake"?
• For an average driver on dry pavement, how far will it take to stop at 55 MPH?
• Which component is NOT part of a vehicle’s air brake system?
• How do you cancel a turn signal in a vehicle?
• What item must a driver carry in their vehicle when transporting hazardous materials?
• If the speed limit is 45 mph but traffic is moving at 35 mph, what is the safest speed to drive?
• How can fatigue impact a driver’s performance?
• How can a commercial driver ensure their cargo is properly secured?
• What is considered an unsafe driving condition?
• What does the term "trailer sway" refer to?
• What practice is essential for maintaining a safe driving routine?
• What is a critical step to take before driving in adverse weather conditions?
• What is the purpose of the air brake system’s safety valve?
• What does GVWR stand for?
• What action is advisable in emergency situations with a rear-wheel skid?
• What does the term "jackknife" refer to in driving?
• When entering or exiting a curved freeway ramp, how fast should you maintain your speed?
• How should you handle a situation when another driver is tailgating you?
• What is the maximum legal BAC for commercial drivers in most states, including Louisiana?
• How often are pre-trip inspections required for commercial vehicles?
• What should a driver do if they miss their exit?
• Which of the following is important to check before a long trip?
• When should you adjust your mirrors?
• What does controlled braking entail?
• What is the proper braking action when traveling down a long hill?
• What is required for the skills test in obtaining a CDL?