The Lethal Weapon star was quick to call emergency services after spotting two cars collide on Pacific Coast Highway in Malibu earlier this week (begs23Aug10).

He then crossed through traffic to get to the scene of the accident, where he motioned for passing vehicles to slow down and assisted an injured man until paramedics arrived.

The 21-year-old victim's mum tells TMZ.com that Busey was ""very sweet and caring"". The man is said to be recovering well after the incident.