A woman escaped serious injury Tuesday afternoon after colliding head-on with a tractor-trailer on Route 443 in West Penn Township. The crash occurred at 5 p.m. as she was traveling east about a quarter mile west of the intersection with Route 309. She crossed the center line and hit the rig. The woman was evaluatedby members of the Penn Mahoning Ambulance. West Penn fire police maintained traffic control at the scene, reducing traffic to onealternating lane. West Penn Township police Sgt. Melissa Ruch is investigating the incident.