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Reply to "Is there a way to CONDITIONALLY engage the stopping action of the Lionel 253 signal?"

Consolidated Leo posted:

I don't think that you can get direction from the switches. Maybe from the non-derail part of the switch but that's internal; not available from the posts. That would give you the trigger for direction just like any other isolated track detection method.

Why can't you get the direction from the O22?  The switch position lights the corresponding lamp in the controller, a low current relay across those posts should give you the detection that's needed.  If it can light a bulb, it can supply a relay.

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