![]() Routefinding restrictions require using the YAPF pathfinder for trains.īy default, electric signals with a routefinding restriction program attached have a blue signal post. In most cases, slots should be used instead. Slots can be used in conditionals in routefinding restrictions and programmable pre-signal programs, and in conditional orders.Ĭounters are named variables which can be modified when a train passes a signal.Ĭounters can be used in conditionals in routefinding restrictions and programmable pre-signal programs, and in conditional orders. Trains can acquire or release membership of slots (acquire or release tokens) at signals, or using conditional orders. Slots are analogous to token systems used in real-life railways, in particular single-line sections.Ī slot has a capacity, the number of trains which can be in the slot/have a token.Ī train can be a member of any number of different slots at once (have any number of different tokens at once). ![]() Programmable pre-signals are block signals, with no support for PBS. Programmable pre-signals are combo pre-signals, with programmable conditions for whether the signal is red or green. These programs can be used to control pathfinding, PBS, slots, counters, reversing, speed restrictions and other miscellaneous operations. These programs are run by trains, and can check various train properties, and slot and counter values. ![]() Routefinding restriction programs can be attached to any kind of signal.
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