Certificate in Emergency Response Ambulance Driving (CERAD) Theory Practice Exam 2025 - Free Ambulance Driving Practice Questions and Study Guide

The function of Traction Control (TC) and Anti-lock Braking System (ABS) primarily involves managing vehicle dynamics during longitudinal movements.

Traction Control helps prevent the wheels from spinning during acceleration, particularly on slippery surfaces. It achieves this by modulating engine power and, if necessary, applying the brakes to the wheels that are losing grip. This intervention allows for better acceleration and stability when moving forward or backward, which is essentially a longitudinal force.

Similarly, ABS is designed to enhance vehicle safety during braking by preventing the wheels from locking up. When you apply the brakes, ABS detects when the wheels are about to stop rotating and adjusts brake pressure accordingly. This provides better control while stopping, especially in emergency braking situations, which also relates directly to longitudinal movement.

Both systems primarily focus on maintaining optimal contact with the road during forward and backward motion, making their primary function longitudinal in nature.