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Accesories - Trackside Signals & Structures - 252 Crossing Gate
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Lionel 252 Crossing Gate Test - YouTube
Accesories - Trackside Signals & Structures - 252 Crossing Gate
Relay train detector circuit for 3-rail track
Lionel Crossing Gate 252 Clip - YouTube
Lionel Crossing Gate, Demo - YouTube
Lionel 6-14098 Auto Crossing Gate | O Gauge Railroading On Line Forum