Baird v. Power Rental Equipment Inc‪.‬

The substance of Dr. Campbells testimony was that while the primary emphasis in his studies had been on automobiles, farm tractors, and airplanes, he was familiar with forklifts as a result of having attended persons who were injured while using them when he was a physician for a large department store. He also testified in the offer of proof made that he had studied industrial forklift accidents to determine the effect upon the operator that the lack of seat belts would cause in a simple tip-over of a forklift; that, as a result of his studies the group he was associated with had recommended to a major manufacturer of tractors and forklifts that operators wear seat belts.