Police are investigating the death of a man found injured in the road.
Emergency services were called to Thornhill Road, near the Excalibur Drive roundabout, in Thornhill, Cardiff, at about 22:45 BST on Tuesday.
He later died of his injuries. South Wales Police said it believed he had came off a pushbike.
The road was closed for a number of hours as officers investigated and an appeal was made for anyone with information to come forward.