A driver failed to give way before changing lanes, colliding with the side of another vehicle late on Tuesday afternoon .
The occupants sustained minor injuries.
However, an altercation ensued, with those in the car that was hit heatedly venting at the other driver, Sergeant Tony Woodbridge said.
They were subsequently "told off" by police.
Sgt Woodbridge urged drivers to exercise caution in changing lanes in Thames St.
Two alleged drink-drivers were caught in Oamaru last weekend.
A 40-year-old Waimate woman stopped late last Friday by police returned a breath-alcohol level of 510mcg in Thames St, and a 22-year-old Oamaru man recorded a level of 710mcg just after 1am on Sunday.
A 40-year-old Waimate man has been remanded on bail in South Otago following multiple family harm incidents on the same day, in Oamaru last Saturday
Johnathan Hill appeared in the Dunedin District Court on Monday, on charges of assaulting a person in a family relationship, escaping custody, aggravated assault and an unrelated charge of driving while disqualified.
He has been bailed to a Gore address on the condition he not travel north of Maheno unless for court.
Hill is also not allowed to drive, contact the complainant directly or indirectly, and is to refrain from violence.
He is due to reappear in court in Dunedin on January 30.
