Police Scotland have named the victim as 49-year-old Kevin Bodle who died after the collision on the A75 on Tuesday morning.
Sergeant Lloyd Caven said: “Our thoughts remain with Kevin’s family and friends at this terrible time, as they try to come to terms with their loss.
“We continue to appeal for anyone with information on the crash, any witnesses, or motorists who may have been in the area and have dashcam footage, to please come forward. You can call police on 101, quoting incident 0538 of 21 May, 2024.”