Double Triple Test | South Carolina 2025 #1

Train for FREE with our South Carolina CDL double triple practice test online. 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 SC CDL double triple 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 may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . If you are not sure if there is enough space for your vehicle to safely pass under a bridge, you should:

Speed up.

Swerve as you pass under the bridge.

Slow down.

Drive on the shoulder.

If you are not sure that you have enough room to safely fit underneath a bridge or other overhead object, you should slow down and seek an alternate route, if possible.

2 . Stopping distance can be affected by:

Speed.

Engine oil.

Time of day.

Traffic.

Factors that can affect stopping distance include your vehicle's speed, its weight, and the traction provided by the road surface.

3 . When looking under your vehicle's hood during a pre-trip inspection, you should:

Use the parking brakes and/or chock blocks.

Leave the vehicle in a low gear.

Remove the battery.

Disconnect the radiator.

Before inspecting under a vehicle's hood, make sure the parking brake is engaged and/or the wheels are properly chocked.

4 . To help your vehicle be seen by others:

Your headlights should be clean.

Your headlights should be turned off during the day.

Your headlights should be covered with grease.

Your headlights should be used, but only in the rain.

A vehicle's headlights should be clean during trips. This will ensure that the lights can provide as much light as possible, helping the vehicle to be seen.

5 . Air tank drains:

Allow rain water to enter air tanks.

Are used to drain water and oil from air tanks.

Should never be opened.

Must remain open while driving.

In an air brake system, the air tanks are equipped with drains that allow water and compressor oil to be removed from the system. If allowed to build up, water and compressor oil can damage an air brake system.

6 . What kind of brakes do most newer heavy-duty trucks use?

Single air brakes

Dual air brakes

Triple air brakes

Most newer heavy-duty vehicles use dual air brake systems. A dual air brake system has two separate air brake systems which use a single set of brake controls.

7 . If your vehicle is hydroplaning, you should:

Use the accelerator.

Not use the brakes.

Put the vehicle in a higher gear.

If your vehicle begins to hydroplane, do not apply the brakes. Instead, slow down by releasing the accelerator and pushing in the clutch.

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2025 South Carolina | Frequently Asked Questions

To acquire a CDL Passenger endorsement in South Carolina, you must first hold a valid CDL. Then, you need to pass the Passenger Transport Test, which covers the special rules and skills for carrying passengers. Lastly, you must pass a driving test in a vehicle similar to one you'll be operating with passengers.

To obtain a CDL Passenger license in South Carolina, you must be at least 21 years old, hold a valid Commercial Driver’s License (CDL), pass a Passenger Transport written test, and complete a skills test in the type of vehicle you'll be driving. A background check and medical examination may also be required.

While South Carolina doesn't require specific training to secure a CDL Passenger endorsement, it's beneficial to have experience driving large vehicles. However, you must pass the Passenger Transport written test and a skills test in a passenger vehicle. Training programs can help prepare you for these tests and enhance your driving skills.

Yes, in South Carolina, to obtain a CDL Passenger endorsement, you must pass the Passenger Transport written knowledge test. This test focuses on specific rules and safety guidelines for transporting passengers. The test covers areas like inspecting passenger vehicles, loading/unloading passengers, and emergency procedures. You may also need to take a road skills test in a passenger vehicle.

During the CDL Passenger endorsement assessment, you'll need to demonstrate your ability to inspect your vehicle, manage passenger entry and exit, handle emergencies, and navigate different road types safely. You'll also need to show proficiency in maneuvering the vehicle through turns, intersections, and various traffic conditions.

No, it's illegal to transport passengers commercially without a valid CDL Passenger endorsement in South Carolina. This endorsement ensures that drivers have the necessary knowledge and skills to safely transport passengers. Violating this can result in fines, loss of commercial driving privileges, and even legal consequences.

Yes, you can add the CDL Passenger endorsement to your existing commercial driver's license. You don't need to apply for a new license. However, you will need to pass the passenger endorsement knowledge test and, in some cases, a skills test. Check with the South Carolina DMV for specific requirements.

Yes, there are restrictions for drivers with a CDL Passenger endorsement. They must comply with all federal and state regulations, including hours of service rules. They cannot transport more passengers than the vehicle is designed for, and they must ensure that all passengers use seat belts. Violation of these rules can lead to fines or loss of endorsement.

Yes, to obtain a CDL Passenger endorsement in South Carolina, you must be at least 21 years old. This is a federal requirement for any driver operating a commercial vehicle that crosses state lines. However, if you're only driving within South Carolina, you may be able to get a CDL at age 18. Always check with the South Carolina DMV for specific state requirements.

With a CDL Passenger endorsement in South Carolina, you can operate commercial vehicles designed to carry 16 or more passengers, including the driver. This includes buses, school buses, shuttle vans, and some types of limousines. Remember, the exact type of vehicle you can drive also depends on other endorsements and restrictions on your CDL.