Wednesday, August 5, 2015

Traffic lights.....

Apparently, traffic lights are 101 years old today.  While this seems kinda non-bikey, it did get me wondering.  The first ones were undoubtedly simply timed to change at certain intervals....making equal opportunity for each sides all traffic to pass.  My question is how long have they been "smart" enough to recognize traffic and "prioritize" or change a signal for waiting traffic?  Or perhaps restated....exactly when did they stop working for people using anything else but cars!? 

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