Commercial motor vehicle size and weight (VSW) requirements are in place for roadway safety and infrastructure preservation. However, the amount of infrastructure damage an overweight vehicle causes is geometrically larger than the weight increase; for example, an increase in axle weight from 18,000 pounds to 20,000 pounds causes 50 percent more damage to the pavement.rnGiven the capital investment currently spent to maintain existing infrastructure-88 percent of the total amount of Federal-Aid Highway Program funds in 2007 were obligated for restoration and rehabilitation, resurfacing, and reconstruction-it is critical that adequate size and weight enforcement be in place.
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