What Is Red Fail?

What is Red Fail?

The monitor detects a channel which has no active color output to the field. (AKA a dark approach)

if a traffic signal light is not working, you must

When you get a Red Fail, the issue is in the cabinet. From the top of the Terminal block up in the cabinet wiring and signal components.

Here is an example of a diagnostic wizard for red fail.

A diagram of a signal

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History : The term Red Fail is when the intersections would rest in all red and a vehicle would come to an approach. When the lights were transitioning to green in that approach and a fault occurred, they would say if it is not all red then there is a “Red Fail".