A 79-year-old woman suffered serious injuries in a two-car crash in Ripponden last night.
The collision happened shortly before 8 pm on the A58 Halifax Road, Ripponden near the junction with Kenworthy Lane.
Firefighters were called to cut out trapped victims.
The woman suffered a suspected fractured neck and internal bleeding and is currently detained at the Bradford Royal Infirmary.
She was a front seat passenger in a VW Polo driven by an 83-year-old man and he was taken to Dewsbury Hospital with serious but non life threatening injuries.
Both are from Sowerby Bridge.
Three people were travelling in the other car which was a Fiat Punto.
The 19-year-old female driver was taken to Huddersfield Royal Infirmary with serious but not life-threatening injures.
An 18-year-old male passenger is detained at Leeds General Infirmary with a serious back injury and an 18-year-old female suffered minor injuries.
Fire crews from Halifax and Elland attended.
Halifax crew commander Mark Jones said: “When we got there we discovered there were still casualties in the vehicles.”
After paramedics stabilised three trapped casualties firefighters cut off the roofs of both cars to release them.
The road was shut for a over couple of hours while the emergency services dealt with the incident.
Police are appealing for witnesses to contact PC James Alderson or Acting Sgt Nigel Fawcett-Jones in the Western Area Roads Policing Unit on 101