fL has warned passengers to prepare for six months of disruption on the night tube as another staff walkout begins on Friday.
RMT members will begin the longest strike in London Underground history from 8:30 p.m. Friday night until 8:00 a.m. Saturday, and 8:30 p.m. Saturday until 8:00 a.m. Sunday.
The union threatened to take possible action on other lines regarding the new roster provisions, which it said “would undermine the work-life balance of drivers.”
Andy Lord, Managing Director of the London Underground, said: “We are disappointed that once again the RMT continues to push for strike action which is likely to cause further unnecessary disruption.
“We call on the RMT to join us in discussions so that we can work together to resolve this dispute over roster changes, which means no job loss and greater flexibility for drivers.”
“If the London Underground and the mayor thought this fight for progressive, family-friendly working practices was going to go away, they need to think again,” he said.
“It is the failure of LU and Sadiq Khan to respond to the grievances at the heart of the dispute that leaves us no choice but to confirm that the program of action is proceeding as planned.”
The Night Tube was reintroduced on the Central and Victoria lines in November, but suffered delays after a strike.
TfL says it continues to work on the reintroduction of night services on the Jubilee, Northern and Piccadilly lines.
However, bosses claim the issue is complicated by a lack of resources on these lines and the upcoming closure of the Northern Line bank branch.