Britain's trains could have panic alarms installed on board to protect women from sex attacks.
The move is part of a government reform designed to protect women.
According to the Evening Standard, more CCTV and police officers on late-night services are also being studied with backing from the British Transport Police.
Sexual harassment is now commonplace on London's transport systems.
One in seven female passengers over the age of 16 experienced some form of sexual harassment on buses, trains and the Tube in the past year, according to Transport for London figures.
Ministers say more must be done to make it safer for women to use public transport, particularly late at night, reports the Daily Mail.
Transport Minister Claire Perry is organising a conference on improving women's safety on public transport.
60 delegates from women's charities and campaign groups are expected to attend.
"I am determined to do everything I can to make transport safer for women," she said.
"That's why my department, along with British Transport Police, has funded a research project to find out what measures work on the ground, both here in the UK and internationally. I also know there is more we can do, which is why I want to hear directly from the many groups represented at today's event."
Panic buttons would use GPS technology to give police the power to track the location of trains and board services at the next station.
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