A truck driver was pinned to his seat by the steering wheel and dash of his truck after a rear-ender on the Monaro Highway on Monday morning.
The man's truck crashed into the back of another truck and hit a road barrier fence on the highway's southbound lanes about 8.10am, near the intersection with Isabella Drive in Gilmore.
The collision crushed the front of the truck, leaving a driver aged in his 30s pinned by his legs and abdomen.
He was left with lacerations to his feet and stomach.
Firefighters rushed to the scene, and removed the driver's side door.
Paramedics stabilised the man, and firefighters cut him free while he was still conscious.
The dash and steering wheel were folded away from the driver using the jaws of life, and he was removed on a rescue longboard.
It took roughly 40 minutes to free the man.
He was taken to the Canberra Hospital for treatment.
The second truck was left with only minor damage to its rear end.
A driver aged in his 40s was treated for shock, as well as neck and back soreness, before being taken to hospital for assessment.
Police closed southbound lanes of the highway between Isabella Drive and Johnston Drive through peak hour traffic.
Police reopened the highway about 11.15am.
Any witnesses who had not spoken to police were urged to contact Crime Stoppers on 1800 333 000.