A crash on the A1079 near Market Weighton yesterday left a woman with serious head injuries.
The woman was taken to Hull Royal Infirmary following the collision about 8.30am.
She was driving a blue Hyundai which collided with a silver Mercedes. The driver of the Mercedes was not hurt.
Police closed the road in both directions after the crash, but it reopened at around noon.
Any witnesses are asked to call Humberside Police on 101.