Question:  How are detector loops installed?
Answer:  There is a variety of equipment.  The photo below shows a round loop saw (Caltrans Type E).  The second photo shows a saw that cuts straight lines.  This saw can be used in combination with the previous to cut the lead in slots or can be used by itself to make a square loop (Caltrans Type A or D).  It takes about 5 minutes to cut a Type E loop, 10 minutes to cut a Type A loop, and 15 minutes to cut a Type E loop.  The cutters have a jet of ...
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