Emergency services were called to the Great Western Highway at Wallerawang, about 15 kilometres north-east of Lithgow, just after 5pm when a Holden Commodore towing a boat jackknifed and crashed.

The male driver and sole occupant of the vehicle died at the scene.

MAP: The area where the crash occurred …

As of 8pm on Sunday he had yet to be formally identified.

Officers from Chifley Police District attended and are investigating the circumstances surrounding the crash.

A report will be prepared for the Coroner.

The incident followed another crash on the Mid Western Highway between Bathurst and Cowra on Sunday afternoon.

A man was trapped in a vehicle following the crash at about 3.30pm, and the road was closed in both directions until about 8pm.

Anyone with information about these or other incidents is urged to contact Crime Stoppers on 1800 333 000 or at nsw.crimestoppers.com.au.

Information is treated in strict confidence and the public is reminded not to report crime via NSW Police social media pages.