The Pine Street and Memorial Drive intersection received a traffic signal conversion in early 1985 that eliminated the green poles and installed the yield left-turn signal on Pine Street. Due to the southbound dual left-turn lane, the restricted left-turn signal remains on Memorial Drive. The southbound left turn signal's separate pole has been removed, and the signal now is on the mast arm. In the background is the Gilcrease Expressway, with Tulsa International Airport beyond it. Photo taken May 1986.
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