http://news.bbc.co.uk/1/hi/england/beds/bucks/herts/4355480.stm
Line speed at Hadley Wood is 110mph, not a good idea to go on the tracks .A 15-year-old boy has died after being hit by a train.
British Transport Police said initial reports indicated the teenager had died as a result of a "tragic accident" following youths trespassing.
Emergency services were called to the tracks near Bakers Hill, Hadley Wood, Hertfordshire, after reports a London to Peterborough train had hit someone.
Police said the death was not suspicious but highlighted the dangers of trespassing on the railway.
A police statement said the teenager from the Barnet area was pronounced dead at the scene on Tuesday evening and the coroner's officer had been informed.