This article compares the relative performance cfthe US. and the SO state highway systems against resottrces available, over the period [1984][1985][1986][1987][1988][1989][1990]. Data are collected on 13 measures cf revenues, expenditures, pavement condition, congestion, bridge condition, and accidents. Statistics are normalized to control the effects of size and ir^Jation. Each state's performance is then graded according to whether the state is making progress, holding steady, or losing ground relative to the national trends. Findings shew that the US. highway system is in good condition and is continuing to improve: even statistics on congestion are now beginmng to show improvement. Against this general improvement six states have been able to mainxcdn or inwove their highway systemswith considerably less resources per mile than other states. These states are New Mexico, South Dakota, Wyoming. Mississippi, South CaroUrta, and Arkansas. Each ofthese states seems to have a combination of geography, traffic, economic structure, and fiscal capability that results in particularly cost-effective highway systems. The findings suggest that simplistic explanations of performance based on location, urbanlrural distinctions, weather, climate, or taxes are inadequate: more research is needed to explain the causes ofthese differences.
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