Warwickshire police are appealing for witnesses after a woman was hit by a car on Myton Road between Leamington and Warwick on Monday.
The incident happened at about 5.15pm and involved a black Ford Fiesta and a Renault Clio.
The pedestrian, a 45 -ear-old woman, sustained serious head injuries and was taken to the University Hospital in Coventry by ambulance.
She remains in a critical but stable condition.
Police are eager to speak to anyone who may have witnessed the incident.
Call 101 quoting incident number 267 of Monday 9th November.