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	Podcast:		TechStuff
	Episode:		How Railroad Crossing Signals Work
	Category:		Technology
	Duration:		00:32:58
	Publish Date:		2010-09-15 18:12:48
	Description:		Every driver has seen a railroad crossing -- the iconic system of bars, lights and warning bells designed to keep cars away from trains. But how do they actually work? In this episode, the guys explore the technology powering railroad crossing signals. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.
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