Texas CDL General Knowledge Practice Exam

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Study for the Texas CDL General Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which of these statements about brakes are true?

The heavier a vehicle or faster it is moving the more heat the brakes have to absorb to stop.
Brakes work better when they are wet
Cool brakes are more effective than hot brakes
Brakes do not need regular maintenance

The correct answer is: The heavier a vehicle or faster it is moving the more heat the brakes have to absorb to stop.

Brakes are a crucial component of a vehicle's safety system. Option B is incorrect because wet brakes can cause a loss of friction, making them less effective. Option C is also incorrect because heat actually helps to increase the friction between the brake pads and rotors, making hot brakes more effective than cool brakes. Option D is not a true statement as brakes do require regular maintenance to ensure they are working properly and to prevent potential safety hazards. Option A is the only correct statement as the weight and speed of a vehicle determine how much heat the brakes need to absorb to stop the vehicle. This is why heavier vehicles or faster moving vehicles require stronger brakes to be safe.