An angry truckie snatched the car keys from a tourist driver and threw them over a fence in Queenstown yesterday.

Sergeant Keith Newell, of Queenstown police, said the truck driver told police he forced the female driver of a rental vehicle to stop after she twice "cut him off" at the Frankton and Glenda Dr roundabouts about 7pm.

"He took the keys and threw them over a fence in frustration.

"When spoken to by police he apologised for going too far."

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The woman recovered the keys before police arrived.

Sgt Newell said motorists concerned about unsafe driving should contact police on *555 instead of taking action themselves.