Applying the Rowland v. Christian (1968) 69 Cal.2d 108 factors, this decision holds that while it was foreseeable that motorists on the SR 99 four-lane highway might be injured by colliding with a tree on Union Pacific’s adjoining property that was 20 ft. from the right-hand lane, the public policy related Rowland factors outweighed foreseeability of harm. Requiring owners of land adjoining highways to remove natural obstacles that speeding cars might strike would essentially take the landowners’ property without compensation and impose on them a duty that properly belongs on Caltrans to design and maintain highways safely.