(Portland, OR)  --  Police continue to investigate a two-vehicle crash that left a Portland woman dead.  Authorities say 58-year-old Diana Miller-Dixon died Saturday when her car was hit by another vehicle near North Rosa Parks Way at Delaware Avenue.  Officials say 21-year-old Rayna Johnson ran a red light at the intersection and slammed into Miller-Dixon's car.  Police say Miller-Dixon died at the scene and her passenger was injured, and two passengers in Johnson's car were also injured.