Robinson was behind the wheel when he struck and killed a motorcyclist in Delta, B.C., in October 2008 while on the way home from a Halloween party with his children, where he admitted to drinking five beers.
Robinson told the judge that immediately after the crash, he walked his kids home and then pounded back alcohol to calm his nerves before returning to tell an investigating officer he was the driver.
Judge Janice Dillon of B.C. Supreme Court says Robinson knew his actions would interfere with the police investigation into the crash, and she concluded Robinson drew on his police training in an attempt to beat the breathalyzer.
The Crown argued at trial Robinson was a high-ranking officer who knew he could escape a charge of drinking and driving by consuming alcohol before being tested.
The crash that killed 21-year-old Orion Hutchinson occurred a year after Robinson was the lead officer of a group of Mounties who were called to account after the Polish immigrant died when he was jolted a Taser at Vancouver's airport.