It happened last night on the N80 at Kilbride Cross near Ballon.
A man has been rushed to hospital after being involved in a crash in County Carlow.
The two car collision happened before 9pm last night on the N80 at Kilbride Cross near Ballon.
One of the drivers, a man in his 20s, has been taken to hospital with serious injuries but no one else was injured.
The road has since reopened, and Gardaí are appealing for anyone who was in the area last night to come forward.