THE male driver of a white Holden Commodore forced a Nissan X-Trail to a stop on the Tuggeranong Parkway and then allegedly got out and physically damaged the grey car.

Police say the alleged road rage incident occurred on the northbound carriageway near the Glenloch Interchange. at about 8.30am on Monday.

The Commodore was seen allegedly driving in an erratic matter, swerving in and out of lanes, before the incident with the X-Trail.

Police are looking for witnesses who saw the incident, the lead up to the incident or anyone with dash-cam footage.  Call 1800 333000, or via the Crime Stoppers ACT website.