'Thirty smile an hour zone: Cheeky artist changes road signs with stickers... and is driving councils mad across Europe
French artist Clet Abraham has amended street signs across Europe
His aim is to entertain and make people think about blindly obeying orders
... This classically trained artist, who now lives in Florence, has been sneaking around cities across Europe in the middle of the night and strategically placing stickers on street signs to alter their meanings...'