Time, Self-Selection and User Charges for Public Goods.

Many public goods generate utility only when combined with time-input. Important examples include road networks and publicly provided leisure facilities. If it is possible to charge for the time spent using the public good it is generally a second-best Pareto optimal policy to do so even in the absence of congestion. An optimal linear user charge is analyzed within a standard optimum income-tax framework. Second-best public good provision in the presence of a user charge is also characterized and factors that influence the direction of optimal distortion of the public good supply are identified.