Tube and rail passengers face travel chaos today and over the coming weeks, despite a day of strike action being suspended while the RMT considers a new and improved pay offer from Network Rail.
A planned Tube strike begins today and a run of walkouts by train workers begins again tomorrow, with 14 rail operators preparing for industrial action in March and April.
RMT members in Network Rail were due to strike on March 16, followed by a series of overtime bans and rest day working bans by the rail body's operation and maintenance staff.
The RMT has now suspended that industrial action against Network Rail, as union members vote on the latest offer in a referendum, which concludes on March 20 at midday.
The new offer includes a salary increase of 14.4pc for the lowest paid and 9.2pc for the highest paid staff. There is an additional 1.1pc on basic earnings and increased backpay.
The RMT said it was not making a recommendation on how to vote on the offer, which is not conditional on accepting Network Rail's modernising maintenance agenda, which the RMT does not endorse.
RMT general secretary Mick Lynch said: "We will continue our campaign for a negotiated settlement on all aspects of the railway dispute."
Which lines are affected in today's Tube strike?
In addition to the train strikes, Tube drivers in the Aslef union and Tube workers in the RMT union are holding strike action today, which will affect all London Underground lines. The walkouts, coinciding with Budget day, will be seen as an effort to overshadow Jeremy Hunt's Spring Statement.
Thousands of union staff will walk out in a dispute over pensions and working arrangements. Test train and engineering train drivers on the London Underground have also voted to walk out.
Transport for London (TfL) has said that there will be little to no service expected on the entirety of the Tube network for 24 hours, with continued disruption lasting until Thursday morning.
The Elizabeth Line and Overground are set to run as normal, but TfL has urged commuters to allow more time for their journey, as stations will be much busier than normal with expected queuing. The DLR and trams are also expected to run as normal, but with warnings of reduced station stops due to closures.
Tube workers last went on strike on November 10 after talks failed to resolve a dispute over pay, jobs and conditions.
RMT general secretary Mick Lynch said: "Our members will never accept job losses, attacks on their pensions or changes to working conditions in order to pay for a funding cut which is the government's political decision.
"Tube workers provide an essential service to the capital, making sure the city can keep moving and work long hours in demanding roles.
"In return they deserve decent pensions, job security and good working conditions and RMT will fight tooth and nail to make sure that's what they get."