The M11 has reopened after a serous crash closed it in both directions near Stansted Airport.
The crash, believed to involve a single lorry, happened just after 9am on Friday.
Both northbound and southbound lanes were closed between junctions seven and eight following the collision.
Emergency services were at the scene with drivers urged to avoid the area.
It comes as Gatwick Express trains have been cancelled throughout Friday.
Southern and Thameslink services face possible cancellations, changes, diversions or delays up to 20 minutes.
Govia Thameslink warns disruption likely to last until day's end.
National Rail said: "Disruption is expected until the end of the day."
