In the business of engineering today's trucks, the design evaluation has become very complex and continues to increase in complexity through a variety of factors. The size and diversity of the truck product offering, the requirement to meet government specifications, the increase in design evaluation costs, and the complexity of new technology combine to create this complexity. An approach to solving the complexity of truck design evaluation is an organized three phased attack that integrates vehicle on road testing, physical laboratory testing, and analytical evaluation into a combined effort that will maximize design evaluation output.