RAIL workers are demanding more be done to tackle violence on trains and at stations across the north of England.
Staff at Northern Rail, which operates services across the region, are calling for a zero tolerance approach.
Their demands include more staff, an increased police presence and an alcohol ban on some services.
A petition organised by the RMT union is signed by conductors and station staff.
RMT general secretary Bob Crow said: "The statistics tell the sorry story of more and more violence against railway staff, particularly late at night and at weekends, and our members are telling Northern Rail that they have reached the end of the line.
"We will work with anyone who can help stop the violence - but Northern Rail really do not have the option of failing to respond positively to this campaign."
Mr Crow said there had been 109 physical assaults and 230 cases of threats and verbal abuse on Northern Rail staff this year, but that many more go unreported.
A Northern Rail spokesman said: "Northern will not tolerate any act of violence or intimidation against any member of staff and will seek the strongest penalty against any individual who threatens their safety."
He also said that Northern Rail worked closely with the British Transport Police and had brought private prosecutions against offenders.