At one point in the 1970s it seemed that every corner in NYC controlled by traffic signals also had these devices (Mosholu Avenue and Fieldston Road), which were mounted on the same posts that the stoplights themselves were. Occasionally, they would be mounted to telephone poles and lampposts, and in midblocks, they would often be […]
from Forgotten New York http://forgotten-ny.com/2017/07/traffic-detection-riverdale/
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