Authorities investigate footage of tram driver 'asleep'
{{#rendered}} {{/rendered}}London transit authorities say they are examining a video that appears to show a tram driver asleep at the wheel on the same route where a tram with a different driver derailed this month, killing seven people.
The Sun newspaper on Saturday published the footage, which it says was taken by a passenger in April.
London Mayor Sadiq Khan says he is very concerned by the video. Transit authority Transport for London and tram operator First Group say they are urgently investigating.
{{#rendered}} {{/rendered}}Rail accident investigators say the derailed tram was traveling at 44 mph (70 kph) in a 12 mph (20 kph) zone when it came off the tracks Nov. 9.
One theory being investigated is that the driver lost consciousness.
The driver was arrested on suspicion of manslaughter.