Motorists travelling to Edinburgh on the M90 in Fife are facing a 13-mile-long queue with a 60-minute delay over the Queensferry Crossing.
Reports suggest the backlog has now almost reached the Kelty on-ramp at Junction 4, due to the volume of traffic attempting to drive south to the capital.
No incidents or crashes have been reported on the road, with the delays likely caused due to trains being affected by ScotRail staff taking part in industrial action on Saturday.
