failure to stop at a posted stop sign.Roskamp ‘critical’QUINCY, 111. - 13-year-old Ronald Roskamp of Keokuk is listed in critical condition this morning at Quincy’s Blessing Hospital, where he is being treated for injuries suffered when struck by a car in Hancock County.The accident occurred at 12:05 p.m., Wednesday, on Illinois Highway 96, one and four-tenths miles south of the West Point Road.Roskamp was struck by a car driven by Allen Saxbery, 76, Sutter. The boy was reportedly crossing the road to the mailboxtar Vi a n ho uroa hit