Red Seal Truck and Transport Mechanic Practice Exam

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What does the acronym ABS refer to in truck braking systems?

Automatic Braking System
Anti-lock Braking System
Advanced Brake Safety
Auxiliary Brake System

The correct answer is: Anti-lock Braking System

The acronym ABS in truck braking systems stands for Anti-lock Braking System. This is a critical safety feature designed to prevent the wheels from locking up during braking, especially in slippery conditions. When a driver applies the brakes, the ABS monitors the speed of the wheels and modulates brake pressure as necessary to maintain traction. This electronic system enhances vehicle control and stability by allowing the driver to steer during braking, which can prevent skidding and potential accidents. The primary goal of the Anti-lock Braking System is to shorten stopping distances on slippery surfaces while maintaining steering ability, which is essential for safe maneuvering of heavy trucks. Other options like Automatic Braking System and Advanced Brake Safety do not accurately represent the established industry terminology, and Auxiliary Brake System refers to additional braking systems used to assist with slowing down a vehicle rather than preventing wheel lock-up during regular braking. Thus, B is the correct interpretation of the acronym in this context.