Long delays on M1 at Milton Keynes due to vehicle fire
Two lanes on the southbound carriageway are closed
Two lanes of the carriageway on the M1 southbound are closed just before Junction 15.
The problem is due to a vehicle fire, say officials from National Highways East.
"There are long delays of at least 30 minutes above usual journey times approaching J14. Please take care on the approach," said a spokesman.
Bucks Fire and Rescue Service is at the scene.