A police checkpoint on a busy highway in the St. John's area on Sunday night produced a good result for those concerned about drunk driving.

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A police checkpoint on Sunday night found all drivers were sober. (CBC)

None of the drivers in the 150 vehicles stopped at a checkpoint on Pitts Memorial Drive, near the Trans-Canada Highway, was found to be impaired.

That didn't mean, however, that police did not have to deal with impaired driving elsewhere.

The RNC said a tip about an erratic driver on Forest Road led to the arrest of a 67-year-old man.

Police said the driver struck two street signs before they caught up with him.

Police said he later blew three times the legal blood-alcohol limit when he was given a breathalyzer test.