On Whom the Toll Falls: A Model of Network Financing
This dissertation examines why and how jurisdictions choose to finance their roads. The systematic causes of revenue choice are explored qualitatively by examining the history of turnpikes. The question is approached analytically by employing game theory to model revenue choice on a long road. The road is covered by a series of jurisdictions seeking to maximize local welfare. Jurisdictions are responsible for building and maintaining the local network. Complexity arises because local network users may not be local residents, and local residents may use non-local networks. Key factors posited to explain the choice of revenue mechanism include the length of trips using the road, the size of the governing jurisdiction, the degree of excludability, and the transaction costs of toll collection. These factors dictate the size and scope of the free rider problem. It is hypothesized that smaller jurisdictions and lower collection costs favor tolling policies over taxes. The analytical model is operationalized by assuming jurisdictions have two decisions: the strategic decision to tax or toll, and the tactical decision of setting the rate of tax or toll. Models of user demand as a function of trip distance and monetary cost and of network costs as a function of traffic flow and the number of toll collections are specified. The values of the constants and coefficients of the model are developed from recent cost literature and the estimation of a model of collection costs from California Toll Bridge data. The model is applied to evaluate the dissertation's hypotheses. The application evaluates the welfare implications of a jurisdiction and its neighbors imposing general tax, cordon toll, odometer tax, or perfect toll policies. Sensitivity tests of the model under alternative behavioral assumptions, and with varying model coefficients are conducted. Finally, policy implications from the analysis are drawn. The general trends which bode well for road pricing (electronic toll collection (ETC), decentralization, advanced infrastructure, privatization, and federal rules) are established. Possible scenarios for three cases are presented: deploying ETC and building new toll roads, and converting free roads.
|Date of creation:||01 Mar 1998|
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