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Unauthorized drone signs appear on highways

kgo
By ABC7
Saturday, July 20, 2013
MARIN CITY, Calif.

Just below this speed limit sign is another that says "speed enforced by drones." Though the CHP doesn't use drones.

The signs were spotted on Highway 101 in Marin City and Highway 37 in Novato on Monday.

Caltrans crews had them removed that night.

The CHP has no idea who put them up.

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