Police in Plymouth are appealing for witnesses following a road traffic collision involving a quad bike.
Just before 10pm on Thursday 17th December police were called to a single vehicle road traffic collision on the A38, Westbound carriageway on the on-slip from Marsh Mills towards the Parkway.
It appears that the rider of a quad bike in lane two lost control, collided with traffic lights on the pedestrian crossing and overturned.
The driver of the quad bike, a 54 year old local man was taken to Derriford Hospital with minor injuries.
His passenger who was sat on the rear of the quad bike, a 46 year old local woman was thrown from the vehicle and was conveyed to Derriford Hospital with life threatening injuries.
A specialist forensic investigation of the scene took place and the road was closed for 6 hours whilst investigations continued.
Investigating officers from the Serious Collision Investigation Unit are appealing for witnesses to this incident and anyone with any information is asked to contact police on 101 quoting police incident number 0785 171215.