A man has been arrested on suspicion of causing death by dangerous driving after a man was killed by falling traffic lights.
The incident happened in High Street, Gorseinon, Swansea on Friday just after 16.15 GMT.
A 55-year-old man died when a BMW hit traffic lights and they fell on him.
The arrested man, 21, from the Uplands area of Swansea, remains in custody, a South Wales Police inspector said.
Police have appealed for any witnesses to contact them on the non-emergency 101 line or via Crimestoppers.