Passengers are being urged to plan ahead as rail workers begin a fresh round of strikes over the festive period.
Members of the RMT trade union will walk out from 6pm on Christmas Eve until 6am on December 27 as part of a long-running dispute over pay and conditions.
ScotRail services will run as normal until 3pm on December 26 but there will be no trains running on Boxing Day and services will resume later than normal on December 27.