While the dispute does not involve ScotRail – the publicly-owned train operator north of the border – it will have a major knock-on effect on the train operator’s ability to provide services as the RMT planned action will involve Network Rail staff in Scotland.
Most services will be cancelled, as signallers will be among those who will be striking.
Previous strike action by the union allowed just 189 services to go ahead, but that figure will increase to 378 during this round as trains are set to reach Fife and the east coast.
There will be two trains per hour between Edinburgh and Glasgow Queen Street, Edinburgh and Helensburgh Central, Glasgow Central and Hamilton, Glasgow Central and Lanark, Edinburgh and Inverkeithing, Edinburgh and Tweedbank and Milngavie and Springburn.
There will be one train per hour on the impacted days between Edinburgh and Glasgow Central, Edinburgh and North Berwick, Glasgow Queen Street and Larbert, and Glasgow Queen Street and Falkirk Grahamston.
The services will run between 7.30am and the final train will leave “well before” 6.30pm, the operator said.
“It is very unfortunate to see such widespread disruption across the whole of the Great Britain rail network and we know this will be frustrating for ScotRail customers,” said David Simpson, the operator’s service delivery director.
“Regrettably, this strike action by RMT members of Network Rail means that we will not be able to operate the vast majority of our services during the period of strike action.
“Customers should expect significant disruption to services on strike days, as well as the following day.
“We are able to operate on more routes than on the previous day of strike action, however, we are still only able to run a very limited number of services on these routes, so we’re advising customers to seek alternative means of transport and to only travel if they really need to.”
ScotRail said disruption is also likely to be felt the day after the strikes, with signal boxes in the central belt able to be turned on at around 7.15am, but it could take into the afternoon to restore services in other areas.