Police have shared these pictures of a van which overturned on the M4.
The incident happened on the busy road near Morriston, Swansea on Thursday evening. Traffic monitors showed slow traffic on the M4 eastbound at Ynysforgan.
Tweeting the images at 7.17pm, South Wales Police wrote: "Luckily all occupants walked away with just minor injuries as they were wearing seatbelts. A quick check of the tyres shows a possible cause. Always check your tyres and always wear a seatbelt."
Shortly afterwards, there was an accident on the M4 which left the Briton Ferry Bridge partially blocked and caused very slow traffic.