Can there be a sharing of (common) brake components between three brake systems and to what extent?
No, common brake components cannot be shared between three brake systems. Each machine must have an independent braking system for the service brake, and an independent brake or parking brake. This redundant braking system cannot be shared because in an emergency, the operator may need to activate both braking systems at one time, and if the braking components are shared there would be only one braking system. Question #3 Can the parking brake (or parts of it) be considered a backup or secondary system? Answer: Yes, the parking brake or parking brake (separate from the service brake) can be considered a backup or secondary system. Question #4 If a machine has an independent hydraulic drive to each of its two drive wheels can the hydrostatic braking applied separately and independently to each wheel be considered as two separate brake systems? Answer: No, if a machine has a separate and independent hydraulic drive for each of its two drive wheels, it is considered one braking system. Qu