Abstract: A windshield wiper system which vertically wipes the entire front windshield of an automobile during both up and down wiping strokes. The system has left and right wiper assemblies horizontally positioned and attached to left and right runner assemblies slidably attached to vertical runner tracks. Driving cables synchronously move the runner assemblies vertically up and down thereby causing the horizontal wiper assemblies to vertically move up and down. The wiper assemblies overlap and thereby establish a continuous horizontal wiping zone across the windwhield. The separate and overlapping wiper assemblies permit a lengthening and contracting of the wiping zone without interference between wiper assemblies. A tensioning cable applied across the wiper assemblies permits adjustment to changing windshield contours without losing contact with the windshield.