Better Signals

Add new differents types of signals : Junction, indicate wich direction is open Approach speed reduction, a annonce to the "Junction" signal Shunting, for manoeuver in train yard Announcement, turn yellow if next signal is closed

Companion signal, placed next or under a signal, to extend his display

Add new logics : Warning - if a signal is closed, then the signal before turn yellow R/RR - if only one path is aviable, display a certain yellow light Extend the distance for a signal_box - to put further a signal_box from his rail Speed HUD - Display the current speed of the controlled train