[ Read Responses | Post a New Response | Return to the Index ] Posted by Jersey Mike on Thu Sep 11 00:18:37 2003, in response to "INDENTRA" train describer loops: ???, This system is used on the SEPTA BSS. The loop broadcasts an identifier, either something like "Hey, I'm express" or "Hey, I need to take the diverging route" and trackside equipment picks up the RF code and then lines the route accordingly. Think of it as a wireless punchbox. Responses
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