Scotrail has warned travellers to expect cancellations after it was unable to publish a temporary Sunday timetable in the face of ongoing driver shortages.
The railway operator - which is now under public ownership - announced via social media that it could not guarantee all services on Sunday would go ahead as planned.
Train bosses are battling staffing shortages in the wake of the coronavirus pandemic. The shortages have led the firm to clashes with trade unions who say existing drivers are being overworked.