Here we go. These are NORAC operating rules. Signals are found to the right or above the track. There are going to be a lot of posts. L is lunar white/ R is red / Y is yellow/ G is green and * is flashing. 281- Clear (G or G over R) 281b - Approach Limited ( Y over *G)
It would be awesome if you could also include what each signal actually means, still, pretty cool nonetheless.
Oh here you go. Clear is max permitted speed. Limited is 45 mph . Medium is 30 mph. Slow is 15 mph. Restricting is proceed prepared to stop short of any obstruction. Approach means the next signal is stop Approach limited means next is limited Approach medium means next is medium Slow Approach means slow speed next signal is stop Slow clear means slow speed Medium clear means medium speed Limited clear means limited speed Stop and proceed is as it sounds.