The 21 year old motorcyclist suffered serious injuries in the collision on Saturday afternoon.
Police are appealing for witnesses following a serious road traffic collision near Huddersfield.
The collision happened at around 4.15pm on Saturday 9 February on Huddersfield Road in Netherton.
A motorcycle was travelling along Huddersfield Road in the direction of Huddersfield and there was a collision between the motorbike and a parked Vauxhall Vivaro.
The rider of the motorbike, a 21-year-old man from Bradford, was taken to hospital via air ambulance with serious injuries.
Anyone who witnessed the collision or saw the motorbike prior to the collision is asked to contact the police via 101 quoting log number 1262 of 9 February.