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"Adequate warning devices",
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Actually Kev GE bought one of the main railroad signal companys and Westinghouse the other lately. These junk systems used actually use a unshielded railroad track as the electrical conducter so a mis fireing spark plug in a car hits the right frequency and the gates see a train comeing. The electic is arcing at the right frequency in the area the gates start doing exercises. There are other systems much better with 1/2 the price tag. In Europe they use a 4 code system like the gate is carrying four beepers so there are a lot less false activations and gate failures. Railroads are too cheap to retrain the naintainers to switch systems besides the fact that they don't want the yearly maintenance costs. The old cheaper to kill'em formula.
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