"The WSDOT maintenance crew in Tacoma is testing drone technology that can remove graffiti from hard-to-reach places. The drones could make quick work of painting over graffiti on tall retaining walls, bridges, and overpasses."
While I see why they don't want their workers to perform the death-defying stunt work the taggers used, those places apparently weren't hard-enough-to-reach places, since there is graffiti there.
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