The flow management of a location controls outgoing trains and is very well suited to manage hidden yards: The minimal occupancy grants the yard remains partly filled while the FiFo option allows the trains to exit alternately.
The flow management is controlled by the following two parameters:
Setting this option to values greater than zero will activate the location flow of trains.
No train is allowed to depart if the number of trains is lower than this value.
Or with other words:
Only if the number of trains in the location is equal or greater than this value a train is allowed to exit the location.
If there are staging blocks in the location, all trains in staging blocks are counted.
With hidden stations this allows to control the amount of traffic on the layout: If in a hidden yard consisting of five tracks four trains are always to remain the value has to be set to five (a train is allowed to depart not until five trains are in the yard). Rule of thumb: Number of trains to remain in the yard plus one. The maximal reasonable value is equal to the number of tracks in the yard.
In conjunction with Minimal Occupied (see above) this option will allow departing trains to regard the "First in, first out" rule.
Remark: After a restart the Fifo will be initialized; the order of entering before the restart is not preserved.
Remark: There is no FiFo without a Minimal Occupied greater than zero.
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