In a colour-coded air brake system, what color identifies the park supply components?

In a colour-coded air brake system, the park supply components are specifically marked with orange. This is significant because it provides a visual indication to operators and technicians about the function and purpose of the components involved in the parking brake system. The use of distinct colors enhances safety and ensures that anyone working on or observing the system can quickly identify the parts related to parking and ensure they are properly engaged or disengaged when necessary. This systematization reduces the risk of errors and improves maintenance efficiency in commercial vehicles equipped with air brakes.