A motorcyclist was airlifted to Derriford Hospital yesterday after suffering "life-threatening" injuries following a collision with a tanker on the A38.
Police say the male biker and a 32-tonne Viridor lorry collided with each other at around 4.40pm on a roundabout, which sits half way between Saltash and Liskeard.
The biker suffered what police are currently describing as "serious life-threatening injuries" to his head and leg.
A spokesman for South West Ambulance Service said two off-duty GPs were in the area and were first on the scene until two ambulances and a rapid response vehicle arrived.
The ambulance service also sent a bronze commander to help co-ordinate the medical response.
The biker was transferred from the scene to hospital by the Cornwall Air Ambulance.
Officers from the Serious Collision Investigation Unit have been at the scene and traffic was being monitored by uniformed officers.
The West-bound carriageway was reopened shortly before 8pm.