A truck driver from Madison was not injured in an accident in north St. Louis County that killed a St. Louis man Saturday morning. The State Highway Patrol says a semi driven by 46-year-old Jack Roberts was stopped in traffic when a car driven by 39-year-old Artis Cross changed into his lane and hit his trailer on I-270 at mile marker 30.2 just before 7. Cross was pronounced dead at the hospital less than an hour later.