An overturned vehicle has blocked a lane on the M4 between Swindon and Chippenham.
Police have closed off the lane between junction 17 A350 and junction 16 A3102.
A spokesperson for Wiltshire Police said: "This has happened around halfway between the two junctions.
"At this time there are speed restrictions and lane closures and it is anticipated that a full closure maybe required later in the evening to recover the vehicle.
"Emergency services and Highways England are at the scene dealing with the incident."
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