This is the moment an heroic lorry driver used his vehicle to save the life of a motorist who he spotted had passed out at the wheel.

Russell Dagless, 53, used his HGV to trap the driver's van against a central reservation after seeing him slump over the wheel.

The dashcam footage taken by another lorry driver shows the quick thinking father-of-one positioning his trailer in front of the van as it was bouncing along the safety barrier.