Police are appealing for witnesses following a collision involving five cars in Keighley.
It happened at about 1.08pm on Sunday, 14 August on the A650 close to the junction with the A6035 Bradford Road.
It is believed to have occurred when a red VW Golf travelling towards Bradford was in collision with a green Toyota Yaris, which was also travelling in the same direction.
The collision also involved a black Ford Focus, a grey Volvo V40 and a blue VW Golf.
The 26-year-old male driver of the red VW Golf suffered head and chest injuries in the collision.
He is currently in hospital in a stable condition.
Police would like to speak to anyone who may have witnessed the collision, or the movements of the red Golf or the Yaris prior to it.
Anyone with information is asked to contact PC 6177 Armstrong at Safer Roads and Neighbourhood Support on 101, quoting log reference 0771 of 14 August.
A 26-year-old man was arrested on suspicion of dangerous driving and later bailed pending further enquiries.

Controversial 500MW Solar Farm Spanning Milton Keynes and Northamptonshire Approved Despite Environmental Concerns
Nine People Charged with 49 Offences Following Major Police Raids in Rochdale
Calderdale Youth Justice Service Praised for Supporting Young People Despite Inspection Rating
Bradford Driver Jailed After Ramming Police Car in Huddersfield
Labour Loses Control of Hounslow Council After Councillor Charged with Fraud
Manchester Communities Invited to Apply for Remembrance Sunday Grants
Keighley Women and Children’s Centre Completes Major Expansion
Milton Keynes Man Convicted of Daesh-Related Terrorism Offences
Leeds Bradford Airport Workers Announce 48-Hour Strike
Bradford Youngsters to Mark World Food Day with Cookery Challenge
Four Men Charged Following Series of Warrants in Rochdale
Legal Show
The Golden Era
Remix Saturdays
Alim OnAir