It is 'only a matter of time' before someone dies or is badly injured at Feltham Station unless youngsters stop playing on the tracks.
That is a stark warning issued this week by British Transport Police (BTP) Inspector Allan Wither, who said people were putting themselves in serious danger by showing 'utter disregard' for the traffic signals.
"We have had reports of numerous near misses between trains and pedestrians and motor vehicles at the station," he added."Some people have shown an utter disregard to the traffic signals and cross the railway when the barriers are down and the red lights are signalling pedestrians and drivers to stop.
"It's only a matter of time before someone is seriously injured or killed as a result of trespassing at the crossing."
Last week undercover officers spent an afternoon at the crossing, handing out £50 fines to 25 people they saw climbing onto the tracks while the barriers were down.#
But Feltham councillor Barbara Harris said she believed that not even a death or serious accident would be enough to stop teenagers who loiter around the tracks from risking their lives.
"We'd have some hand ringing and a Facebook tribute page for about 10 minutes and then they'd be straight back on the tracks," she said. "They don't seem to realise that it's not just their own lives they're risking when they mess about."
Insp Wither said Operation Seal was in response to the high number of people trespassing at the station, and also motorists who were disobeying the level crossing traffic signals.
"I think national rail would like to see that crossing close to traffic and pedestrians all together," he added. "But I can't see that happening. It's just bordering on insanity to step onto those tracks with a train approaching with a footbridge just metres away."
Feltham station has a long history of anti-social behaviour and trespass on the tracks but Insp Wither said his team were determined to 'keep ramming the message home'.
They are planning regular undercover operations to monitor the situation and hand out fines and say the next step will be to take offenders through the courts.
"The gloves are off," promised Insp Wither. "The people of Feltham know it's an offence to ignore those barriers and we're determined to stop them causing a serious accident."