A speed camera in Newport has notched up more than £1.4m in speeding fines in the last three years.
The fixed camera on the A4042 Kingsway in the city centre has caught 23,582 motorists driving too fast in a 30mph zone.
It is the highest-grossing speed camera in Wales, and the second highest in the UK - behind a camera on the M60 near Newport.
The figures have come from a Freedom of Information request.
More top news
Cloud will build up over north and west Wales this evening and rain will arrive overnight.
A man has died after being rescued from the sea in Swansea. He was airlifted to Morriston Hospital, where he was pronounced dead.
A teenager from Barry was killed in Magaluf when he tumbled 70ft from a deadly apartment block walkway.