There are currently delays on the M25 between South Mimms and London Colney.
Two lanes have been closed on the anticlockwise carriageway between Junction 23 and 22 due to a HGV with a ruptured fuel tank.
Speed restrictions are in place, and Highways England has warned motorists to pass with care and plan ahead before using the route.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here