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From: saba@ihlpl.UUCP (Sabalaskey)
Newsgroups: net.analog
Subject: Re: Spoofing traffic signals
Message-ID: <922@ihlpl.UUCP>
Date: Mon, 19-May-86 13:40:14 EDT
Article-I.D.: ihlpl.922
Posted: Mon May 19 13:40:14 1986
Date-Received: Fri, 23-May-86 05:33:18 EDT
References: <840@ihu1h.UUCP> <37700004@hpcvlo.UUCP>
Organization: AT&T Bell Laboratories
Lines: 19

> 
> OK, so setting traffic lights aside, can you tell me how to trigger
> a railroad crossing?  A friend of mine claims that he once did it by
> shorting the two rails together near the crossing with a piece of heavy
> wire ...


Yes, this works fine. The wheels of the train short the two rails
together and cuase the gates/lights to operate. You dont even need
a heavy wire, a plain lamp cord (18 guage) will do fine.

PS: I found this out at about when I was 12 years old while I was
learning about elctrical theory. I always did wonder how the gates
knew that the train was coming. I reaked havoc for I while when I
found out how to bring the gates down without having a train go by
(until the neighbors saw me, that is!!!!)

Bruce Sabalaskey
ihnp4!ihlpl!saba