FREE CDL Combination Vehicles Practice Test Online | Texas 2024 Page 2 of 3
Train for FREE online with our Texas 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 TX combination license in 2021, 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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8 . Air pressure in the ____ air line is controlled by either the foot brake or trailer hand brake.
Auxiliary
Air pressure in the service air line is controlled by either the foot brake or trailer hand brake. The service air line is also known as the control line or signal line. This line is connected to relay valves, which allow the trailer brakes to be applied more quickly than would otherwise be possible.
9 . If a trailer's spring brakes do not release when you push the tractor air supply control, you should:
Drive normally without checking anything.
It is important that all of your vehicle's equipment is in proper working condition before you begin a trip. If a trailer's spring brakes do not release when you push in the tractor air supply control, you should make sure the air line connections are properly attached and sealed.
10 . If you are operating a vehicle built before 1998 and are unsure if the trailer has an Anti-Lock Braking System (ABS), you can:
Assume the vehicle has ABS.
If you are operating a vehicle built before 1998 and are unsure if the trailer has an Anti-Lock Braking System (ABS), you can check under the trailer for wheel speed sensors coming from the back of the brakes.
11 . To test the trailer service brakes, you should:
Move the vehicle forward slowly and apply the brakes with the hand control.
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.
12 . If oil and water build up in your vehicle's air tanks, the brakes:
Will be extremely sensitive.
Air tanks should be drained daily to remove water and oil buildup. An excess of oil and water in the air tanks can interfere with proper brake function.
13 . To help prevent rollovers, you should:
Keep the load on one side of the trailer.
To lower the risk of a rollover, load your cargo as closely to the ground as possible. To further reduce this risk, take curves and corners slowly.
14 . A lightly-loaded combination vehicle will stop more slowly than a fully-loaded vehicle because:
The suspension springs only operate when a trailer reaches a minimum weight.
An empty combination vehicle will come to a complete stop more slowly than a fully-loaded vehicle. The stiff suspension springs and strong brakes will have lower traction on a light trailer than they would if the vehicle carried more weight.
2024 Texas | Frequently Asked Questions
To acquire a CDL Passenger endorsement in Texas, you must first have a valid Texas CDL. Then, you need to pass the passenger transport test. This involves studying the Texas CDL handbook, especially the sections on passenger transport. After studying, schedule and pass the written knowledge test at a Texas DPS office.
To obtain a CDL Passenger license in Texas, you must meet the following criteria: be at least 21 years old, possess a valid Texas driver’s license, pass a Department of Transportation physical exam, successfully complete a commercial driver's license general knowledge test, and pass a passenger transport test. Also, you must demonstrate your ability to safely operate the type of vehicle you plan to drive.
While specific training isn't legally required to secure a CDL Passenger endorsement in Texas, it is highly recommended. Experience driving large vehicles can be beneficial. You must pass a written knowledge test, and training can help prepare for this. Some opt for professional training programs to gain comprehensive knowledge and practical skills before taking the test.
Yes, to get a CDL Passenger endorsement in Texas, you must pass a written knowledge test specifically for passenger transport. 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. Preparation involves studying the relevant sections of the Texas CDL handbook.
During the CDL Passenger endorsement skills test in Texas, you'll need to demonstrate your ability to inspect the vehicle, load and unload passengers safely, use emergency exits, and respond to emergencies. You'll also need to showcase your driving skills including turning, backing up, parking, and navigating through traffic or around obstacles while maintaining passenger safety.
No, you cannot legally transport passengers in Texas without a valid Commercial Driver's License (CDL) with a Passenger (P) endorsement. This endorsement is required for drivers who wish to drive a vehicle that can carry 16 or more passengers, including the driver. Driving without the necessary endorsement could result in heavy fines and penalties.
Yes, you can add a CDL Passenger endorsement to your existing CDL in Texas. You don't need a new license, but you must pass the passenger transport written test. After passing the test, the endorsement will be added to your existing CDL. This allows you to legally drive vehicles designed to carry 16 or more passengers.
Yes, there are restrictions for drivers with a CDL Passenger endorsement in Texas. One key restriction is the "P" restriction, which prohibits drivers from operating a passenger vehicle that is not equipped with air brakes if their driving test was taken in a vehicle without them. Additionally, drivers must follow all federal and state regulations for commercial drivers.
Yes, there are age-related prerequisites and limitations for acquiring the CDL Passenger endorsement in Texas. You must be at least 18 years old to obtain a CDL with a Passenger endorsement, but you can only operate within the state. To operate across state lines or transport hazardous materials, you must be at least 21 years old.
With a CDL Passenger endorsement in Texas, you can operate vehicles designed to transport 16 or more passengers, including the driver. This includes city buses, school buses (with a School Bus endorsement), shuttle buses, charter buses, and some types of vans. However, specific vehicle types may require additional endorsements.