Members of the Rail, Maritime and Transport union (RMT) at Network Rail and 15 train operators backed launching a campaign of industrial action.
The union’s leaders will now decide when to call strikes, which will bring huge parts of the network to a standstill.
The union said it was the biggest endorsement for industrial action by railway workers since privatisation.
A total of 71 percent of those balloted took part in the vote with 89 percent voting in favour of strike action and 11 percent voting against.
The union will now be demanding urgent talks with Network Rail and the 15 train operating companies.
RMT general secretary Mick Lynch said: “Today’s overwhelming endorsement by railway workers is a vindication of the union’s approach and sends a clear message that members want a decent pay rise, job security and no compulsory redundancies.
“Our NEC will now meet to discuss a timetable for strike action from mid-June, but we sincerely hope ministers will encourage the employers to return to the negotiating table and hammer out a reasonable settlement with the RMT.”
A walkout by Network Rail signallers will have a significant impact on services.
It is possible that trains will only run for part of the day, such as from 7am to 7pm and only on main lines.
Services could be reduced to around a fifth of the normal weekday timetable.
Members of the RMT union demonstrate outside the Department of Transport in Westminster
John Stillwell
Tube trains parked up during a strike earlier this year
John Walton
