(Tigard, OR)  --  Police say a woman who was killed while walking across Highway 217 in Tigard was a resident of Lake Oswego.  Authorities say Vicky Stroh was crossing the highway early yesterday morning when she was hit by a southbound pickup truck.  Police say it appears Stroh didn't activate the pedestrian signal and was crossing while the driver of the pickup had a green light.  The driver remained at the scene and cooperated with officers.