How should the brake handle be positioned when braking appropriately after a loss of power?

When responding to a loss of power while braking, the brake handle should be positioned in the FULL SERVICE position. This position allows for the application of maximum braking force, which is essential when power assist is lost. In this scenario, utilizing the FULL SERVICE position enables the operator to exert greater control over the braking system and slow down or stop safely.

The FULL SERVICE position is specifically designed to provide optimal braking response under normal or emergency conditions. It engages the system to apply friction force effectively, ensuring the vehicle can come to a halt safely.

In contrast, positioning the handle in the OFF position would effectively disable the brakes, leading to an uncontrolled stop. The EMERGENCY position, while useful in sudden and critical situations, may not provide the gradual and controlled stop needed after a loss of power, as it often applies maximum braking force immediately, which could lead to loss of control. Similarly, placing the handle in the RELEASE position would disengage the brakes altogether, making it impossible to slow down or stop effectively. Thus, the FULL SERVICE position provides the most reliable and responsive option in this context.