The project seeks to discover how statehouse lawmakers understand the connection between changes in transportation energy sources and the state resources available for transport infrastructure and services. Changing options for transportation energy sources increasingly promise to reduce consumption of conventional motor fuels, eroding a major income source upon which states rely to maintain and rehabilitate their own transportation infrastructure. These changes unfold atop longstanding Congressional reluctance to raise federal gasoline taxes, a circumstance that has created chronic deficits in trust funds paying for road infrastructure.