Modesto undercover officer crashes motor vehicle into woman on Roselle On August 7th at around 2:45pm there was an accident at the intersection of Roselle Avenue and Kodiak Drive in Modesto. A lawsuit that has been filed after the accident indicates that an undercover police officer Doug Ridenour was going extremely fast at 72MPH while driving an unmarked police car and struck a Nissan Sentra that was turning left. Officer Ridenour works for the Modesto Police Department. Witnesses in the area report that the officer’s car was driving too fast.