Police closed lanes one and two of the M4 westbound between Chippenham and Swindon, junctions 16 and 17, following a crash this afternoon.
A car, reported to be a blue Fiat Punto, ended up in the middle lane after hitting the central reservation just before 3.30pm today.
An ambulance attended to check the woman driving, who was said to have escaped injury.
Both lanes are now open, said the Highways Agency.
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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 hereComments are closed on this article