How do pneumatic tubes work? Join host Jonathan Strickland on this week's episodes of TechStuff, a podcast from

Categorized: Technology Education

Nov 27, 2015 10:38 PM
How Railroad Crossing Signals Work

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.


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