UK Driving Theory Practice Exam

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Prepare effectively for the UK Driving Theory Exam. Gain confidence with a variety of multiple choice questions and detailed explanations. Master the rules of the road and driving theory principles to ensure success on your test day!

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What is a common cause of brake fade?

Brakes overheating
Low brake fluid
Worn brake pads
Expired brake fluid

The correct answer is: Brakes overheating

Brake fade occurs when the brakes become less effective due to overheating. This is typically caused by prolonged or excessive use of the brakes, such as during long downhill driving or in heavy traffic where the brakes are applied frequently. When the brakes heat up beyond their optimal operating temperature, the friction material can lose its effectiveness. This can lead to a longer stopping distance and an increase in the risk of losing control of the vehicle. While low brake fluid, worn brake pads, and expired brake fluid can also impact braking performance, they do so for different reasons. Low brake fluid can cause a spongy brake pedal and reduced braking efficiency, worn brake pads can lead to metal-on-metal contact and potential damage, and expired brake fluid might lead to moisture absorption and a decreased boiling point. However, these factors do not directly cause brake fade in the same way that overheating does. Understanding the primary cause of brake fade is crucial for safe driving, especially in situations that require heavy braking.