What is the truth about retarders on slippery roads?

Retarders are used in heavy vehicles to assist in slowing down the vehicle, typically by employing engine compression or a similar mechanism. When it comes to slippery roads, the concern with using retarders lies in their potential to disrupt traction and control.

On slippery surfaces, such as those that are wet or icy, the vehicle's tires may have reduced grip on the road. The application of a retarder can introduce additional braking forces, which may lead to a loss of control. This is because the sudden deceleration can cause the wheels to lock up or slide, contributing to skidding. Thus, it is critical to use retarders judiciously in such conditions to maintain traction and vehicle stability.

This highlights the importance of understanding vehicle dynamics and the conditions of the road when operating a commercial vehicle. For instance, while retarders can enhance braking performance on dry roads, their use on slippery surfaces can be hazardous and should generally be avoided to ensure a safe driving experience.