A section of the M90 was forced to close after a van went up in flames.
The blaze happened on the route heading southbound at Glenfarg, Perth and Kinross, at 8.10am on Monday.
Huge tailbacks were caused between Perth and Inverkeithing.
Police closed the southbound carriageway for more than an hour while drivers heading north were only able to use the hard shoulder.
A Scottish Fire and Rescue Service spokesman said: "We had two appliances from Kinross and Auchtermuchty at the scene."