I could not find any information on how these stop signs got there. I do know that this street art is refer to as "Stop Sign Grove".

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Size: 3333px × 5000px
Location: New Orleans, Louisiana
Photo credit: © Jerry Fornarotto / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: art, close-, color, communication, concepts, cr2014, crossroad, danger, destinations, direction, fornarotto, grove, guidance, image, jerry, louisiana, message, orleans, outdoors, people, protection, red, road, safety, sign, signs, stop, street, text, traffic, transportation, travel, vertical, warning