A number of highly cited papers by Flyvbjerg and associates have shown that ex-ante infrastructure appraisals tend to be overly optimistic. Ex post evaluations indicate a bias where investment cost is higher and demand lower on average than predicted ex ante. These authors argue that the bias...

A number of highly cited papers by Flyvbjerg and associates have shown that ex ante infrastructure appraisals tend to be overly optimistic. Ex post evaluations indicate a bias where investment costs are higher and benefits lower on average than predicted ex ante. These authors argue that the...

We embed a stylized traffic model within a general equilibrium model in which labor supply is endogenous and income taxes are distortionary. Within this framework we derive simple rules for performing a cost-benefit analysis that can be applied knowing only the output of the traffic model and a...

We examine the implications of search unemployment for the evaluation of a transport in-vestment in a conventional cost benefit analysis (CBA) assuming perfect competition. Lower transport costs induces search over a larger area and longer commuting distances. The ex-pected duration of vacancies...

This paper studies the interaction between urban spatial equilibrium and commuting congestion dynamics. We present a new monocentric city framework that combines a discrete urban space with multiple Vickrey (1969)-type bottlenecks. The model illustrates commute scheduling patterns by residents...

This paper studies the interaction between dynamic traffic congestion and urban spatial equilibrium, using a model that is a straight unification of the Vickrey (1969) bottleneck congestion model and the Alonso (1964) monocentric city model. In a monocentric city with a bottleneck at the...

We seek to better understand the scheduling of activities in time through a dynamic model of commuting with congestion, in which workers care solely about leisure and consumption. Implicit preferences for the timing of the commute form endogenously due to concave preferences and temporal...

This paper considers the value of travel time variability under scheduling preferences that are de�fined in terms of linearly time-varying utility rates associated with being at the origin and at the destination. The main result is a simple expression for the value of travel time variability...

This paper investigates the distribution of delays during a repeatedly occurring demand peak in a congested facility with random capacity and demand, such as an airport or an urban road. Congestion is described in the form of a dynamic queue using the Vickrey bottleneck model and assuming Nash...

This brief paper derives the value of headway, i.e. the time interval between departures, for a scheduled service. It presents a consistent framework in which users have scheduling costs, time costs and planning costs. The model represents both users who arrive at the station to choose just the...