A woman driver had to be cut free by firefighters after her car was struck by another and flipped over in Brockholes.
The woman, believed to be 61, is understood to have suffered head and ankle injuries.
She was airlifted to Leeds General Infirmary by Yorkshire Air Ambulance, though her condition was not thought to be life-threatening.
The accident happened on the A616 New Mill Road between Brockholes and New Mill at just after 10am on Sunday.
It is believed a Hyundai travelling towards New Mill was in collision with the woman’s Peugeot 206 which was heading in the opposite direction.
Watch commander Chris Bell, of Huddersfield Fire Station, said he believed the Peugeot received a glancing blow to the front wing which caused the car to strike the kerb and flip over onto its roof, landing back on its wheels.
The roof was crushed and the woman was trapped by her legs.
Police officers first on the scene administered first aid. When fire crews from Huddersfield arrived, one police officer was holding the woman’s head stable from the back seat while another was comforting her in the front.
It is understood the woman was conscious throughout the rescue.
Mr Bell said: “The first aid and manual stabilisation was carried out by the police. It was excellent primary care.”
Firefighters removed the badly-damaged driver’s door and used hydraulic rams to free the woman’s legs.
Crews then cut the roof off the car and brought the woman out on a long board. She was then taken to hospital by helicopter.
Two fire engines, paramedics and the ambulance service’s Hazardous Area Response Team attended the scene.
The road was closed while police accident investigators moved in.
Mr Bell said the driver of the Hyundai, thought to be in his 20s, was shocked and may have suffered minor injuries from his seatbelt. All the airbags had deployed.
The road remained closed for several hours.