FREE CDL Combination Vehicles Practice Test Online | Wyoming 2024
Train for FREE online with our Wyoming 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 WY 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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1 . What does an Anti-Lock Braking System (ABS) do?
An Anti-Lock Braking System (ABS) helps prevent wheel lockup during hard braking. If ABS detects impending lockup, it reduces braking pressure to a safe level.
2 . What does the trailer air supply control look like?
It is a circular orange knob.
On newer vehicles, the trailer air supply control is an eight-sided red knob. It's used to control the tractor protection valve.
3 . When driving a combination rig, following distance should be:
Longer than when driving a single vehicle.
In comparison to driving a single vehicle, you should maintain an extended following distance when driving a combination rig. Combinations require longer stopping distances than smaller vehicles.
4 . When driving a trailer with ABS, you should:
Try to not brakes as often as you would when driving a vehicle without ABS.
When driving a tractor-trailer combination equipped with an Anti-Lock Braking System (ABS), you should brake in the same manner that you would if operating a vehicle without ABS.
5 . Using the trailer hand brake while experiencing a trailer jackknife will:
Continue the skid.
If you are experiencing a trailer jackknife, you can help your tires regain traction by releasing the brakes. Using a trailer hand brake while experiencing a skid will only cause the skid to continue.
6 . If the emergency air line loses pressure:
The tractor protection valve keeps air in the trailer's braking system should the trailer break away or develop a leak. A loss of air pressure in the emergency line will cause the tractor protection valve to open and the emergency trailer brakes to activate.
7 . Before a drive, ensure that air flows to all trailers by:
Rolling each trailer down a hill and testing the brakes.
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.
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2024 Wyoming | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Wyoming, you must already possess a Commercial Driver's License (CDL). Then, you'll need to pass the Doubles/Triples endorsement knowledge test. This test covers topics like coupling and uncoupling, inspecting doubles and triples, and the proper procedures for pulling double/triple trailers. After passing the test, you'll receive the endorsement.
To obtain a CDL Doubles/Triples license, you must first have a Commercial Driver's License (CDL). You then need to pass the Doubles/Triples endorsement knowledge test, which covers topics such as coupling and uncoupling, inspecting doubles and triples, and the correct procedures for pulling double/triple trailers. After passing the test, you'll receive the endorsement.
While it's not explicitly required, having specialized experience or training for a CDL Doubles/Triples endorsement is beneficial. You must pass the endorsement knowledge test, which requires understanding the specifics of handling double/triple trailers. Training or experience can help in understanding these specifics. However, the most important thing is to study your state's CDL handbook and pass the test.
Yes, a specialized written knowledge test is required for the CDL Doubles/Triples endorsement. The test covers topics like coupling and uncoupling, inspecting doubles and triples, and following correct procedures for pulling double/triple trailers. Passing this test is mandatory to obtain the endorsement. However, a skills/driving test isn't required unless upgrading the CDL class.
The CDL Doubles/Triples endorsement test is a written knowledge test, not a skills or driving test. It will cover topics such as coupling and uncoupling trailers, inspecting doubles and triples, and the correct procedures for pulling double/triple trailers. You need to showcase your understanding of these topics rather than demonstrating physical maneuvers.
No, it's not permissible to operate double/triple trailers without a valid CDL Doubles/Triples endorsement in Wyoming, or anywhere in the U.S. This endorsement is required by federal law and demonstrates that the driver has the knowledge and skills necessary to safely operate these types of vehicles. Operating without it can result in penalties and fines.
You can append the CDL Doubles/Triples endorsement to your current commercial driver's license. You don't need to initiate a new application for a CDL. However, you must pass the Doubles/Triples knowledge test, and once passed, the endorsement will be added to your existing CDL. Check with your local DMV for specific procedures and fees.
Yes, there are constraints for drivers holding a CDL Doubles/Triples endorsement. For example, these drivers must adhere to weight restrictions and length limitations according to federal and state regulations. Drivers must also comply with hours of service rules, which dictate how many hours they can drive without taking a break. Violating these rules can result in fines or suspension of the license.
Federal regulations limit the gross vehicle weight to 80,000 pounds for vehicles with a CDL Doubles/Triples endorsement. The maximum length for each trailer in a double combination is 28.5 feet, while triple combinations are generally limited to 61 feet in total length. However, specific restrictions can vary by state, so it's important to check local regulations.
Yes, there are specific safety regulations. Drivers must ensure that all trailers are securely attached, and the weight is properly distributed. They must also perform pre-trip inspections, adhere to speed limits, and maintain safe following distances. Additionally, drivers must be trained to handle the high rollover risk associated with these vehicles and understand the proper procedures for coupling and uncoupling trailers.
