191 A.2d 657 Campbell v. Fiorot, Appellant. Supreme Court of Pennsylvania.April 22, 1963. June 5, 1963. Negligence — Automobiles — Evidence of negligence — Sufficiency — Vehicle on wrong side of highway — Skidding. 1. In these actions of trespass in which it appeared that as the defendants’ tractor-trailer was descending a steep down-grade which […]