Can SensorTracks be used to control a train meet where you want one train to take the mainline and the other train to take a passing siding?
Cheers!
Keith
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If they are programmed right then yes. The turnouts would have to be addressed by an sc2 so the Lionel TMCC/Legacy signal can be used.
One would have to allow for a large timing cushion. I have not sure how accurately the train speed would be maintained after many laps. There would have to be another sensor track in the passing siding and two on the main.
It would still be a scenario in a recording. The sensor tracks would only help exactly locate the train. I don't know how one can get an "if" action into the recording to prevent a cornfield meet due to mistiming. Like the through priority train gets there early or the non-priority train gets there late.
"If" non-priority train is not stopped on siding sensor B, then stop priority train when detected by it's sensor.
"If" non-priority train is stopped on siding sensor B, priority train proceeds when it is detected by it's sensor.
I have a four way cross-over and played this game with trains changing tracks running in the same direction. I have done it manually and have tried to program it in Legacy as a recording.
It always ends with a collision, eventually. Of course, I keep increasing the train speeds to create a close call.
I determined that's why railroads schedule such events with plenty of time cushion.
Azatrax and Dallee make a setup with train detection and relays to control track power and a passing siding to change trains for a display purposes. Perhaps the key would have to be a power block approaching the C sensor that is dead until non-priority train is detected by siding sensor B. It would be - train triggers sensor B, and stops, power on to block C.
There would need to additional block power and sensor control in other areas. One cannot rely only on switching. Train detection and collision avoidance is needed.
Collision avoidance is better controlled with relays and an isolated rail or an optical sensor separate from the Legacy recording.
Quite a complex scenario for unattended operation.
Good Luck!
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