Commercial Driver License (CDL) Class B Practice Test

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Study for the Commercial Driver License (CDL) Class B Test. Study using multiple-choice questions, hints, and explanations. Prepare for your exam effectively!

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What is the recommended action if your brakes feel spongy while driving?

Continue driving
Quickly brake to test the system
Inspect the brake system immediately
Engage the ABS system

The correct answer is: Inspect the brake system immediately

If your brakes feel spongy while driving, the recommended action is to inspect the brake system immediately. Spongy brakes can indicate an issue such as air in the brake line, low brake fluid, or a failing master cylinder, all of which can severely compromise your vehicle's stopping power. Taking immediate action is crucial to ensure safety, as driving with compromised brakes increases the risk of accidents. Continuing to drive with spongy brakes can lead to more dangerous situations, as you may be unable to stop the vehicle effectively. Quickly braking to test the system may not provide a reliable assessment and could worsen the problem if the brakes are already failing. Engaging the ABS (Anti-lock Braking System) is useful in certain situations but does not address the underlying issue of spongy brakes, which requires inspection and potentially immediate repair before continuing to drive safely.