Unmarked Downers Grove squad likes to sit at the end of Cumnor just before the stop sign for 39th Street. They also sit on Tower Road (cross street just South of 39th) or along Cumnor just North of 39th. They are ALWAYS out there, usually in the mid to late afternoon on into evening rush hour. They are looking for speeders as well as "Hollywood stops" at the 39th & Cumnor stop sign.