Officers are appealing for witnesses to a collision that happened on the A465, Moreton Jeffries road to A417, Burley Gate in Herefordshire.
The collision happened at around 2:30am on 6 July involving one vehicle. The driver has suffered life changing injuries.
Officers carrying out enquiries into the collision are appealing for witnesses, including any motorists on the road around the time of the collision with dash-cam footage.
Anyone with information is asked to contact PC Kris Cooke on 07773053658 or by email kristoffer.cooke@westmercia.police.uk
Alternatively information can be shared anonymously with the independent charity Crimestoppers on 0800 555 111 or by visiting www.crimestoppers-org.uk