Air Brakes #1
Air Brakes Endorsement Test | Colorado 2025 #1 Page 4 of 4
Train for FREE online with our Colorado CDL air brake 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 CO Class A/Class B driver 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 the requirements for CDL may vary from state to state.
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19 . During an applied leakage test, the maximum leakage rate for a double combination vehicle is:
4 psi in a minute.
It is important to know the maximum air loss rate that is safe for your specific vehicle. A double combination vehicle should have a leakage rate no higher than 4 psi in a minute during an applied leakage test.
20 . What happens if the air pressure in a system's air tanks falls below 60 psi?
The vehicle should stop.
In an air brake system, a low pressure warning signal should activate if the pressure in the air tanks falls to a level below 60 psi. This signal may be in the form of a warning light or a wig wag.
21 . To stop in a vehicle that uses air brakes, the driver should:
Pull the brake pedal up.
To make a normal stop in a vehicle with air brakes, push the brake pedal down. The harder the pedal is pressed, the more air pressure is released.
22 . What does the air compressor governor do?
Controls the temperature of the air leaving the air storage tanks.
In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.
23 . During an applied leakage test, the maximum leakage rate for a triple combination vehicle is:
4 psi in a minute.
It is important to know the maximum air loss rate that is safe for your specific vehicle. A triple combination should have a leakage rate no higher than 6 psi in a minute during an applied leakage test.
24 . When the brake pedal is pushed down, air brakes work:
Only if it is warm outside.
Because air takes time to flow through the air lines to the brakes, air brakes cannot begin working instantly. There is often a brake lag of at least one-half of a second between the moment the brake pedal is pressed and the moment the brakes begin to work.
25 . When inspecting your brakes, a slack adjuster should move ____ from where it is attached to the push rod.
No more than one inch
Check each slack adjuster after setting wheel chocks and disengaging the parking brake. Pull the slack adjusters to make sure they do not move more than about one inch from where the push rod is attached. If they move more than one inch, they may be out of adjustment and will need to be fixed.
See the exact questions that will be on the 2025 Colorado DMV exam.
99.2% of people who use the cheat sheet pass the FIRST TIME
Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
Cameron tells us how he purchased the CDL exam, and found it to be a useful tool which helped him pass the exam and find a job.
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.
