Knowledge Test Class A #1
Class A Driving Test | District Of Columbia 2025 #1 Page 6 of 7
Train for FREE online with our District Of Columbia class A license 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 DC CDL class A permit 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 CDL class A requirements may vary from state to state.
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36 . A one-way check valve:
Holds the spring brakes in position until they are used.
A one-way check valve is required to be between an air compressor and the first main reservoir. This valve prevents air from escaping the system if the air compressor develops a leak.
37 . Laws about securing loads and regulating CMV weights may vary from state to state. During interstate travel:
The driver can choose which state’s laws to follow.
Commercial vehicle weight, securement of cargo, covering of loads, and where large vehicles can be driven are all regulated by federal, state, and local laws. These vary from place to place, so you must be aware of the rules that apply where you will be driving. State laws in the state in which you are driving take precedence.
38 . Off-ramps:
Should be used only if following another vehicle.
The combination of slopes and curves can make freeway on- and off-ramps dangerous for trucks. Remember that posted speed limits on ramps may be safe to be driven by cars but too fast to be driven by large or heavily-loaded vehicles.
39 . Tie-downs are used to:
Label radioactive materials.
On flatbed trailers and trailers without sides, cargo must be tied down to prevent it from shifting or falling in transit. There should be at least one tie-down for every 10 feet of cargo. Regardless of the size of the cargo, at least two tie-downs must be used.
40 . When inspecting the engine compartment, you should not:
Check the windshield washer fluid level.
When inspecting the engine compartment, you should check the oil level, coolant level, and windshield washer fluid level, among other things.
41 . When a construction worker is close to the road, you should:
Wait until the construction is complete before proceeding.
In work zones, you should drive at the posted speed limits. Reduce your speed even further when workers are on or near the road.
42 . A CMV should:
Have a fire extinguisher and other emergency equipment.
All commercial motor vehicles are required to be equipped with the proper emergency equipment. This may include spare electrical fuses; three red reflective triangles, six fuses, or three liquid burning flares; and at least one properly charged and rated fire extinguisher.
See the exact questions that will be on the 2025 District Of Columbia 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.
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2025 District Of Columbia | Frequently Asked Questions
In the District of Columbia, a CDL Class A license allows the holder to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the Gross Vehicle Weight Rating (GVWR) of the vehicle(s) being towed is over 10,000 pounds. This includes tractor-trailers, truck and trailer combinations, and flatbeds.
A Class A CDL license in the District of Columbia permits the holder to operate various types of larger, heavier commercial vehicles. This includes tractor-trailers, truck and trailer combinations, tank vehicles, livestock carriers, and flatbeds. The vehicles can have a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more if the towed vehicle is over 10,000 pounds.
To obtain a Class A CDL license in the District of Columbia, you must be at least 21 years old, possess a valid non-commercial driver's license, pass a vision test, and provide proof of residency and identity. You'll also need to pass written knowledge tests, obtain a Commercial Learner's Permit (CLP), and successfully complete a skills and road test.
In the District of Columbia, you must be at least 21 years old to qualify for a Class A Commercial Driver's License (CDL). This age requirement is consistent across all states and is set by federal regulation. This allows for interstate operation of commercial vehicles. For intrastate (within the same state), the minimum age can be 18.
Specific endorsements are not required for a Class A CDL license but they can provide additional driving privileges. These include endorsements for operating vehicles like school buses, passenger vehicles, tank vehicles, and vehicles carrying hazardous materials. Each endorsement requires passing specific knowledge and skills tests.
The Class A CDL skills test in the District of Columbia consists of three parts: the vehicle inspection test, the basic control skills test, and the road test. The vehicle inspection test involves checking the vehicle's safety components, the basic control skills test assesses your ability to maneuver and control the vehicle, and the road test evaluates your on-road driving skills.
Yes, limitations can be imposed on Class A CDL license holders in the form of restrictions. These are based on the driver's abilities or the type of vehicle they tested in. For example, if a driver takes the skills test in an automatic transmission truck, they will have an 'E' restriction, limiting them to automatic transmission vehicles only.
Yes, it is possible to take the written Class A CDL test in languages other than English in the District of Columbia. However, the Federal Motor Carrier Safety Administration requires all CDL holders to read and speak English sufficiently to converse with the general public, understand highway traffic signs and signals, respond to official inquiries and make entries on reports and records.
Yes, you can request accommodations for the Class A CDL written test in the District of Columbia due to disability. The DMV is committed to providing accessible services and accommodations to individuals with disabilities. You should contact the DMV directly in advance of your test to discuss your needs and the potential accommodations available.
If you don't pass the Class A CDL written test in the District of Columbia, you are allowed to retake it. However, you must wait three days before retaking the test. If you fail the test three times, you must wait 90 days before taking it again. There's also a retesting fee that applies each time.
