Combination #1
Combination Vehicles Practice Test | Louisiana 2025 #1
Train for FREE online with our Louisiana CDL combination vehicle test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a LA combination license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements for issuing a combination license may vary from state to state.
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1 . The "crack-the-whip" effect can:
Trailers can overturn as a result of the "crack-the-whip" effect. The last trailer in a combination is the most prone to tip over due to this effect. Drivers should be aware of the rearward amplification of their specific vehicles and drive accordingly.
2 . The trailer hand valve:
Never use the trailer hand valve while parking because doing so may release the air pressure from the braking system, releasing the brakes that are holding the vehicle in place. Instead, use the parking brake or wheel chocks.
3 . When testing ____, you should apply your vehicle's brakes with the hand control while moving the vehicle forward slowly.
To test the trailer service brakes, you should first ensure that the braking system has a normal air pressure level, then release the parking brake. You should then move the vehicle forward slowly and apply the brakes with the hand control. If the trailer service brakes are working properly, you will feel the brakes activate.
4 . Older trailers are not equipped with spring brakes. This means that if the air supply for a vehicle's air braking system leaks away:
Older trailers do not have spring brakes. This means that if the air supply in an older trailer's air tank has leaked away, there will be no working brakes connected to the trailer and its wheels will turn freely.
5 . Before a trip, you can make sure air flows to all trailers by:
Before a trip, ensure that air in the air brake system reaches all trailers. Do this by waiting for air pressure to build, then sending air to both the emergency and service lines and opening the shut-off valves on the rear of the last trailer. If air escapes from the shut-off valves in the rear of the combination, the air is being supplied to the entire vehicle.
6 . Combination vehicles are usually:
Driving combination vehicles requires more skill than driving single commercial vehicles. Combinations are generally longer, generally heavier, and are more vulnerable to rollover.
7 . If a load is placed on one side of a trailer, the trailer:
Positioning the weight of a load on one side of a trailer may cause the trailer to lean to that side, increasing the risk of a rollover during turns and lane changes.
2025 Louisiana | Frequently Asked Questions
To acquire a CDL Passenger endorsement in Louisiana, you need to hold a valid Commercial Driver's License (CDL). Complete the written knowledge test and skills test related to passenger vehicles at a DMV office. You'll also need to pass a physical exam and provide proof of residency and Social Security number. It's advisable to prepare using the Louisiana CDL Manual.
To obtain a Commercial Driver's License (CDL) Passenger endorsement in Louisiana, you must first possess a valid CDL. Then, pass a written knowledge test about transporting passengers. Finally, you must pass a skills test in a vehicle of the same type as the one you'll be driving. You must also be at least 21 years old to drive across state lines.
While Louisiana doesn't specifically require training to get a CDL Passenger endorsement, it's recommended to have training or experience driving large vehicles. You must pass a written knowledge test and skills test related to passenger transport, so prior experience or training can be beneficial in successfully completing these tests.
Yes, in addition to holding a valid Commercial Driver's License (CDL), you are required to pass a written knowledge test specifically about transporting passengers safely. This test covers topics like vehicle inspection, loading and trip start, on the road, after-trip vehicle inspection, prohibited practices, and use of brake-door interlocks.
During the CDL Passenger endorsement assessment, you'll need to demonstrate skills such as safe vehicle operation, proper mirror usage, correct use of signal indicators and brakes, and ability to perform pre-trip vehicle inspections. You'll also need to show proficiency in loading/unloading passengers, responding to emergency situations, and managing passenger behavior.
No, you cannot legally transport passengers in Louisiana without a valid CDL Passenger endorsement. This endorsement is required for drivers who wish to drive a vehicle designed to carry 16 or more passengers, including the driver. Driving such a vehicle without the appropriate endorsement can lead to serious penalties.
Yes, you can add the CDL Passenger endorsement to your existing Commercial Driver's License. You don't need a new application for your license, but you will need to pass the Passenger endorsement written exam and pay an additional fee. The endorsement will be added to your existing CDL upon successful completion of the exam.
Yes, there are restrictions for drivers with a CDL Passenger endorsement in Louisiana. These include not being able to consume alcohol within four hours of driving or while driving, maintaining a BAC of less than .04%, and not leaving passengers unattended in the vehicle. Violating any of these restrictions can result in fines, license suspension, or even revocation of the endorsement.
Yes, to acquire a CDL Passenger endorsement in Louisiana, you must be at least 21 years old. This is to ensure that drivers have enough experience on the road before they are entrusted with the responsibility of transporting multiple passengers. There's no upper age limit as long as you can pass the necessary physical and written exams.
With a CDL Passenger endorsement in Louisiana, you'll be qualified to operate vehicles such as buses, shuttle vans, and any other vehicle designed to transport 16 or more passengers, including the driver. This means you can work for school districts, public transit agencies, and private transportation companies.