Guelph police say an off-duty officer helped them arrest an alleged impaired driver on Wednesday night.
A Peel Regional Police officer spotted a vehicle that had front-end damage on the Hanlon Expressway at around 6:40 p.m.
Police said the officer called it in while following the vehicle to a parking lot at Woodlawn Road and Woolwich Street before detaining the driver until Guelph police arrived.
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The woman was arrested and police said she had nearly twice the legal limit of alcohol in her system after providing breath samples at the station.
A 25-year-old Cambridge woman has been charged with impaired driving and driving with no licence.
She will make a court appearance in June.
Police continue to remind everyone to call 911 immediately to report suspected impaired drivers.