Abstract
This paper studied the relationship between the ride discomfort and the lateral acceleration of automobiles. Subjects rated their ride discomfort caused by the maneuver of a mini-van type automobile they rode. Their rating scores were recorded together with the lateral acceleration of the automobile. Relationship between the rating scores of ride discomfort and the lateral acceleration/jerk was investigated. Multiple regression analysis with the lateral acceleration and jerk as the explanatory variables and the subjective ratings of ride discomfort by the subjects as criterion variables was carried out to model the relationship between ride discomfort and acceleration/jerk. Then the differences between three different postures were shown by comparing their models.
