Defendant no. 1 parked his truck in the street near the bottom of a ditch on a dark, foggy night. Iron pipes carried in the truck projected nine feet beyond the truck in back. Neither the truck nor the pipes carried any warning light or flag, in violation of both a city ordinance and a state statute. Defendant no. 2 was a taxicab owner whose taxicab was negligently driven at an excessive speed. Defendant no. 2 ran into the pipes, thereby killing the passenger in the taxicab. The plaintiff brought an action for the passenger’s death against both defendants. Defendant no. 1 claimed he was not liable because it was Defendant no. 2’s negligence that had caused the harm. Was this defense valid? [Bumbardner v Allison, 78 SE2d 752 (NC)]