A Dedham man was killed Saturday afternoon after a multi-vehicle collision on Route 1A in Dedham. Edwin Roberts, 89, was driving a red 2019 Mercedes-Benz sport utility vehicle on the Pine Trail Road in Dedham when he failed to stop at the intersection of Route 1A, according to the Hancock County Sheriff’s Office. Roberts drove into the southbound travel lane in front of a Dodge Ram pickup towing a camper driven by Ahmet Hakan Parlakulas, 50, of Williamsburg, Massachusetts.