Question:  My City has a traffic signal with a protected left turn that is to be converted to a permissive.  There is a mast arm for this move which currently has a signal heads for the left turn phase and through phase.  I have been told there is a product available from Pelco called the Astro-Brac that I can use to replace both the existing heads with one doghouse head, and mount it in between the current head locations.  What more can you tell me? 

Answer:  Pelco has a product called AB-0...


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