South Wales Police are appealing for witnesses following a traffic collision on Mayals Road yesterday, where a man was pronounced dead at the scene.

Emergency services were called to the collision, which happened at the junction of Mayals Road and Fairwood Road, shortly before 10:45am yesterday.

The vehicle involved was a blue Toyota Yaris and, despite the best efforts of members of the public and emergency service personnel, the driver, a 65 year-old local man, was pronounced dead at the scene.

The man's family is currently being supported by a specially trained officer, South Wales Police said in a statement.

"We are appealing to anyone who witnessed the collision or its aftermath, witnessed the manner in which the vehicle was being driven prior to the collision, or anyone who may have any video footage of the incident to make contact," South Wales Police said.

"We are also keen to speak to a female motorist who was wearing a brown coat and possibly driving a small red car, and a man who both helped to get the driver out of the car and began CPR, but left the location before the arrival of a police officer.

"Mayals Road was closed at its junction with Fairwood Road for several hours to allow officers to conduct the necessary enquiries and the local community is thanked for its patience and understanding at this time."

Anyone with information is asked to contact South Wales Police's Serious Collision Investigation Unit on 101 quoting reference 2100040631.