The Devizes man who was in a car crash just before Christmas died yesterday, January 10. His family is being supported by a specialist family liaison officer.
The collision was on the A360 north of Salisbury at about 10.20am on December 20, at the junction with Stoford and the Woodfords.
The 47-year-old man was driving a silver Honda CRV which collided with a DAF cement truck.
He was airlifted to Southampton General Hospital with serious injuries.
The driver of the cement truck, a 21-year-old man from Salisbury, was arrested on suspicion of dangerous driving, and is on bail pending enquiries by the Serious Investigation Department.
Any witnesses should call 101 and quote crime reference number 54180120284.