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This paper takes a step towards eliminating the automobile industry's dependence on “seat of the pants” ride analysis by investigating the correlation between vertical acceleration and passenger comfort. To do this, it first develops a relationship between accelerometer data and ride comfort on a controlled test surface, and then extends this relationship to actual road conditions. To illustrate the usefulness of this approach, a simple, typical problem in more detailed ride analysis is briefly considered.

In Equation 10, there should be a plus sign between the first summation term and the quantity in brackets. The acceleration of the participant's vehicle was varied from −0.04 m/s2 to +0.06 m/s2 linearly as a function of the angle of the gas pedal with a 0.1-second delay.