Economists wishing to analyse road congestion and road pricing have usually relied on link-based speed-flow relationships. These may provide a poor description of urban congestion, which mainly arises from delays at intersections. Using the simulation model SATURN, we investigate the second-best proportional traffic reduction and find that linear speed-flow relations describe network flows quite well in eight English towns, though the predicted congestion costs and charges overstate those apparently required in our second best model. We then confront the results with feasible optimal cordon charges, and find them reasonably correlated, but imperfect predictors.
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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number
3176.
Find related papers by JEL classification: H11 - Public Economics - - Structure and Scope of Government - - - Structure and Scope of Government H51 - Public Economics - - National Government Expenditures and Related Policies - - - Government Expenditures and Health R48 - Urban, Rural, and Regional Economics - - Transportation Systems - - - Government Pricing; Regulatory Policies
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