An inquest in Nottingham has heard that a tram sounded its horn five seconds before hitting and killing a teenage girl.
13-year-old Lindsey Inger died instantly when she was struck in November 2012.
PC Colin Thomas from Nottinghamshire Police carried out a forensic investigation at the scene and studied CCTV images taken from a camera on the tram.
He told the inquest Lindsey had not stepped onto the track when the tram-driver sounded the horn. But for some reason she did not hear or see the tram and carried on walking over the crossing.
There was also no evidence that Lindsey had been wearing earphones or using her phone when she was hit.
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