This paper asks the question, "How should the level of mass transit service be adjusted when road pricing is introduced for a substitute auto mode?" The reference point for the introduction of road pricing is second-best optimization in transit. Because this involves below- marginal-cost pricing...

This paper examines the role of uncertainty shocks in a one-sector, representative-agent dynamic stochastic general-equilibrium model. When prices are flexible, uncertainty shocks are not capable of producing business-cycle comovements among key macro variables. With countercyclical markups...