(Courtesy: David Pelto Jr)LANCASTER, Pa. - A small plane landed on the Pennsylvania Turnpike Monday evening, shutting down some traffic and prompting a crash, authorities said.Turnpike Commission spokesperson Carl Defebo told WGAL-TV the plane apparently made an emergency landing and then was struck by a vehicle.Authorities did not immediately disclose any injuries, WGAL-TV reported.The Pennsylvania Turnpike tweeted shortly after 6:30 p.m.