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Reply to "Insulated Rail Relay Chatter"

Like the main said, DC is way better than AC for signaling, because it offers so many different trouble-free solutions. 

 

The next step after one relay, is to use a "start" relay to set the gates in the down position, and a "release" relay to raise them up.  A single pulse from the first axle operates each relay, so train length and intermittent (and or plastic) wheels/axle combinations are immaterial.

 

After that, you can graduate to "start, hold, and release" relay circuits, and then to circuits that don't care if the traffic is westbound or eastbound.

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