Air Brake Practice Test

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Study for the Air Brake Exam with flashcards and multiple choice questions. Each question includes hints and explanations to boost your knowledge. Prepare now and ace your test!

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 action should be avoided when descending a steep grade?

Using engine brakes in combination with service brakes.
Riding the brakes consistently.
Monitoring speed regularly.
Maintaining a safe distance from other vehicles.

The correct answer is: Riding the brakes consistently.

Riding the brakes consistently when descending a steep grade can lead to a significant increase in brake temperature, which can cause brake fade and ultimately a loss of braking power. When brakes are applied continuously for an extended period, they can overheat, which reduces their effectiveness and poses a danger to the vehicle and its occupants. Effective braking on a steep descent involves using a combination of engine braking and intermittent application of service brakes to manage speed without continuously applying pressure on the brakes. Using engine brakes in combination with service brakes is a recommended practice, as it helps in reducing wear on the brake components while maintaining control over the vehicle's speed. Monitoring speed regularly is crucial for safety, allowing the driver to adjust their braking strategy as necessary for the conditions and maintaining a safe distance from other vehicles helps prevent collisions, giving more reaction time on such descents.