The incident occurred at around 2am on Sunday, November 30 on the eastbound carriageway of the M4 between junctions 17 and 18.
Police have confirmed a 32-year-old man died following the incident. Another man who was in the car has been rushed to hospital and is receiving treatment for serious injuries.
National Highways has previously said that the vehicle left the carriageway. A spokesperson for the company has confirmed that the eastbound carriageway remains closed, and that reports indicate it may remain closed into the afternoon.
Wiltshire Police’s Serious Collision Investigation Team are appealing for witnesses and urged anyone with information or dash cam footage to contact them directly.
A spokesperson for Wiltshire Police said: “We are sad to report that a 32-year-old man has died following a road traffic collision involving a single vehicle on the M4, in the early hours of this morning.
“The man’s next of kin have been informed and they are receiving support from specially trained officers. Our thoughts are with them.
The incident has resulted in the closure of the M4 eastbound between junctions 17 and 18. (Image: National Highways)
“Another man who was in the car is receiving hospital treatment for serious injuries.
“The collision took place at about 2am this morning (30/11) on the eastbound carriageway of the M4 between Junction 17 and Junction 18.
“Wiltshire Police’s Serious Collision Investigation Team are appealing for any witnesses or anyone who may have dash cam footage taken from the time to contact them on 01225 694597 quoting log number 40 of today’s date (30/11).
“Alternatively email SCIT@wiltshire.police.uk.”
As of writing, the M4 remains closed eastbound. Earlier on Sunday, November 30, a spokesperson for National Highways said: “At around 02:00 Wiltshire Police responded to a serious single vehicle collision involving a car which left the eastbound carriageway near Leigh Delamere services.
“The carriageway was closed to allow Wiltshire Police, Dorset and Wiltshire Fire and Rescue Service and South West Ambulance Service to work at the scene of the collision.
“National Highways Traffic Officers attended the scene and assisted the emergency services by providing traffic management at both the scene and at J18.
“All traffic caught within the closure was turned and released via rearward relief.
“Although no definite timeframe can be given for re-opening at this stage, early indication suggest the closure will remain in place throughout this morning and into the afternoon.”
A spokesperson for Dorset and Wiltshire Fire Service said: “We were called at 2:08am today with reports of a road traffic collision on the M4 between junction 17and 18, Chippenham.
“One crew from Malmesbury attended along with appliances from Bath, Yate and Portishead (Avon FRS) and assisted the ambulance service with the extrication of one casualty using hydraulic cutting equipment, small tools and stabilisation gear. Our stop was in at 4:37am.”
