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FMCSA CDL (CDL) Practice Tests & Test Prep by Exam Edge - Free Test


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FMCSA CDL Practice Test Features

Everything you need to pass your certification exam!


Our free FMCSA Commercial Driver's License (CDL) Practice Test was created by experienced educators who designed them to align with the official Federal Motor Carrier Safety Administration content guidelines. They were built to accurately mirror the real exam's structure, coverage of topics, difficulty, and types of questions.

Upon completing your free practice test, it will be instantly reviewed to give you an idea of your score and potential performance on the actual test. Carefully study your feedback to each question to assess whether your responses were correct or incorrect. This is an effective way to highlight your strengths and weaknesses across different content areas, guiding you on where to concentrate your study efforts for improvement on future tests. Our detailed explanations will provide the information you need to enhance your understanding of the exam content and help you build your knowledge base leading you to better test results.

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FMCSA Commercial Driver's License Sample Test

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Weather conditions  can often affect traction.  In adverse conditions, what is the safest way to accelerate?





Correct Answer:
slowly accelerate.


the question here is asking about the safest way to accelerate in adverse weather conditions that affect traction. traction refers to the grip of a vehicle's tires on the road. adverse conditions such as rain, snow, or ice can reduce this grip, making it harder for the vehicle to accelerate without skidding or slipping.

the first option, "up shift and quickly accelerate," is not recommended. shifting up to a higher gear while accelerating quickly can create a sudden increase in speed, which can be dangerous if traction is limited. the sudden increase in speed might cause the wheels to spin or the vehicle to skid, especially on slippery surfaces.

the second option, "slowly accelerate," is generally the safest method. slowly increasing speed allows the tires to maintain their grip on the road, reducing the likelihood of spinning or skidding. if the wheels start to spin, easing up on the accelerator can help regain traction.

the third option, "accelerate normally," may not be safe in adverse conditions. normal acceleration may be too fast in conditions with reduced traction, increasing the risk of losing control of the vehicle.

the final option, "acceleration is not recommended," is not a practical solution in most situations. while it's true that staying stationary is the safest option in terms of maintaining traction, it's often necessary to move the vehicle, even in adverse conditions. in these cases, slowly accelerating is typically the safest method.

in conclusion, when traction is reduced due to adverse weather conditions, the safest way to accelerate is to increase speed slowly and cautiously. if the wheels begin to spin, it's important to gently reduce pressure on the accelerator until traction is regained.


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