Emergency services have been called to the M90 north of the Queensferry Crossing to reports of a car fire.
Police and fire crews were called to the scene on the Edinburgh to Perth road at around 9:50am.
Drivers have been told to expect delays after the fire caused a lane closure.
Traffic Scotland posted: “M90 Ferrytoll northbound, lane one is currently closed due to a vehicle fire on the hard shoulder. Road users are advised to approach with caution and expect delays.”
No one is said to be injured.