This paper formulates a model of optimal road capacity in the presence of unpriced congestion. The model includes the assumption that the peak traffic volume may fall below the capacity of the highway because of a large level of traffic density. The analysis in the paper shows that the optimal...

This paper examines urban highway congestion pricing in the instance in which it is not possible to levy a congestion toll on a major portion of the urban road system. This case is pertinent because of technical and/or political constraints. The paper uses economic theory of the second best and...

This paper presents an economic model of generalized travel cost and provides an empirical study of the parameters of the cost function. The route-choice model that is estimated combines McFadden's theory of qualitative choice behavior with a function for the value of travel time in which total...