A 25-year-old woman from the Hilperton area is in a serious condition in hospital after she was injured in a crash on the A350 at Chalford near Westbury.
The collision occurred at 1.40pm on Saturday as the woman was riding a Yamaha motor scooter towards Warminster. The scooter was in collision with a parked Vauxhall Zafira.
The woman was airlifted to Frenchay Hospital, Bristol.
The road was closed for four hours while police investigated the crash.
Any witnesses are asked to contact PC Steve Cox of the serious collision investigation team at Wiltshire Police on 101.