Railroad Crossings
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The staff at The Henry Ford
Railroad crossings can be dangerous places. Rail companies first protected their busiest crossings with employees who waved flags or lanterns, or lowered gates, when trains came through. Later, automated lights and gates, operated by electrical relays wired to the track, alerted people of approaching trains. The X-shaped crossbuck, which marks public railroad crossings in the United States, is now a universally recognized warning sign.
