One Way Signals

One Way Signals allow control of the direction of Trains on a track.

Selection of a track will place the One Way Signal and the lights on both sides will appear white while highlighting the Tracks to either side.
Selecting a highlighted track (which will highlight in green) will change the One Way Signal to a green light on the side that a train may pass through the signal and red light on the side that may not.

A One Way Signal may be removed by shift and selecting the signal.

Trains will normally travel the shortest distance between Train Stations listed in their Transport Route. One Way signals can force the Trains to take a different, longer, route between stations (e.g. on a circular track).