27 May 2013
Updated at 09:13 ET
German railways to test anti-graffiti drones
Small surveillance drones are already widely used, like this one in Israel
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Germany's national railway company, Deutsche Bahn, plans to test small drones to try to reduce the amount of graffiti being sprayed on its property.
Small surveillance drones are already widely used, like this one in Israel
link-
http://www.bbc.co.uk/news/world-europe-22678580