Tank Endorsement Test | Colorado 2025 #1

Train for FREE with our Colorado tank endorsement 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 CO tank 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 CDL tank vehicle endorsement may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . If using a helper while backing a vehicle, where should they stand?

In front of the passenger side

In front of the driver side

On the wide of the truck

Near the back of the truck

If you use a helper while backing your vehicle, they should stand near the back of the vehicle in a place where they are visible to you. Before backing, work out a set of hand signals that both you and your helper understand. Agree on a signal for "stop."

2 . Move over laws require:

Trucks to use the left lane.

All vehicles to vacate the lane closest to an emergency vehicle that is stopped with its lights flashing.

All vehicles to use the left lane.

All vehicles to move to the left lane if a flatbed trailer is in the right lane.

If an emergency vehicle with its lights on is stopped on the side of the road, move over laws require drivers to vacate the lane directly next to the vehicle, if possible. If a driver cannot move over safely, they must slow down and proceed with caution.

3 . Stopping distance can be affected by:

Speed.

Temperature.

Time of day.

Traffic.

Stopping distance is affected by a vehicle's speed. The faster you are driving, the longer your stopping distance will become.

4 . When checking your tires, which of the following is not an issue to correct?

Too much air pressure

Too little air pressure

Radial and bias-ply tires used together

Tread depth of at least 4/32 of an inch on the front tires

Problems to check for when inspecting tires include: air pressure that is too low or too high; using radial and bias-ply tires together; tread depth of less than 4/32 of an inch in major grooves on front tires; and tread depth of less than 2/32 of an inch on all other tires.

5 . Roads are most slippery right after it begins to rain because:

The water mixes with oil and grease on the road.

The roads are naturally slippery.

The gravel gets washed to the middle of the lane.

Some tires are not designed for rain.

Roads are particularly slippery when it first begins to rain. The water mixes with oil drippings on the road that have not yet washed away, creating a slippery and dangerous mixture.

6 . If you are being tailgated, you should:

Drive on the shoulder.

Pull off the roadway.

Drive faster.

Allow the vehicle to pass.

If someone is tailgating you, it is a good idea to open up the space ahead of your vehicle to make it easier for the driver to pass you. Increasing your speed is not a good idea because the driver may continue to tailgate you at the higher speed, only increasing the danger.

7 . Rims with welding repairs:

Are unsafe.

Are acceptable on tires in the rear of the vehicle.

Are acceptable only when carrying a heavy load.

Are acceptable in combination vehicles.

A driver should inspect wheels before a drive, specifically looking for damage on the wheels and rims. Wheels or rims that have had welding repairs are not safe for use.

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2025 Colorado | Frequently Asked Questions

To acquire a CDL Passenger endorsement in Colorado, you must first have a valid Colorado CDL. Next, pass the CDL General Knowledge test and the Passenger Transport test. You need to complete a background check if transporting 16 or more including driver. Lastly, pay the required fees and you'll receive your passenger endorsement.

To obtain a CDL Passenger license in Colorado, you must be at least 18 years old (21 for interstate travel), have a valid Colorado driver's license, pass a vision test, and complete a medical examination. You'll also need to pass a written knowledge test, a skills test, and have a clean driving record. Some endorsements may require additional testing.

Yes, securing a CDL Passenger endorsement in Colorado requires specific training. You must understand the operation and safety procedures for passenger vehicles. This includes passing a written test on the subject. Although not mandatory, practical experience driving a passenger vehicle can be helpful in passing the skills test. Training courses are available through various providers.

Yes, additional written tests or exams are mandatory for the CDL Passenger endorsement in Colorado. In addition to the general knowledge test, you will need to pass a specific test that covers topics related to passenger vehicle safety and operation. This endorsement is required if you plan to drive a vehicle designed to transport 16 or more passengers, including the driver.

During the CDL Passenger endorsement assessment in Colorado, you'll need to showcase skills such as vehicle inspection, safe loading and unloading of passengers, proper use of emergency exits and equipment, and safe operation of the vehicle. You'll also need to demonstrate your ability to manage distractions and maintain a safe environment for passengers.

No, in Colorado, you cannot legally transport passengers in a commercial vehicle without a valid CDL Passenger endorsement. This endorsement is required for drivers who wish to drive vehicles such as buses or other vehicles that carry 16 or more passengers, including the driver. Driving without the necessary endorsement can lead to serious penalties.

Yes, it's possible to add the CDL Passenger endorsement to your existing license. You don't need a new application. However, you must pass the Passenger Transport Test and, in some cases, a skills test in the type of vehicle you will be driving. Always check with your local Department of Motor Vehicles for specific requirements.

Yes, drivers with a CDL Passenger endorsement in Colorado must comply with specific rules. For instance, they cannot transport more passengers than the vehicle is designed to carry, and they must ensure all passengers use seat belts. Also, they cannot use a cellphone while driving and are subject to stricter DUI regulations. Violating these rules can result in penalties or loss of endorsement.

Yes, in Colorado, to obtain a CDL Passenger endorsement, you must be at least 21 years old. This age requirement is set to ensure the driver has adequate experience and maturity to handle the responsibilities of transporting a large number of passengers. Additionally, applicants must hold a valid CDL and pass the necessary knowledge tests.

With a CDL Passenger endorsement in Colorado, you're eligible to operate vehicles such as buses, shuttle vans, and any other vehicle designed to transport 16 or more passengers, including the driver. This endorsement also allows you to drive vehicles used for public or private transportation, school buses (with additional school bus endorsement), and vehicles for special needs transportation.