Tyne and Wear Metro
Photos from mentioned incident: https://www.flickr.com/photos/25854025@N03/6196273226 https://www.flickr.com/photos/25854025@N03/6195760309 https://www.flickr.com/photos/25854025@N03/6195760195 https://www.flickr.com/photos/25854025@N03/6196272646