Pii: S1366-5545(00)00002-8
نویسنده
چکیده
This paper deals with pricing and modal split in a competitive mass transit/highway system with heterogeneous commuters. Two groups of commuters that dier in their disutility from travel time, schedule delay and transit crowding, select the transit or auto mode for traveling from a residential area to a workplace. We compare three pricing schemes: the marginal cost-based transit fare with no-toll (called ÔmÕ for short), the average cost-based fare with no-toll (ÔaÕ) and marginal cost-based fare with time-invariant toll for subsidizing transit (ÔsÕ), and derive a socially optimal combination of transit fare and road toll which minimizes the total social cost of the competitive system meanwhile ensuring no de®cit to the transit side (ÔoÕ). The main ®ndings from the analytical and numerical results are: (1) the ÔoÕ policy generates the most total transit usage, then ÔsÕ, ÔmÕ and ÔaÕ in order; (2) the total usage of each mode is independent of the demand composition when group 1 uses both modes; (3) the group 2Õs aversion to transit crowding does not aect total transit usage; (4) group 2 has relatively larger welfare gains from some changes in pricing policy, such as changing ÔmÕ to ÔsÕ or to ÔoÕ; (5) the a-policy results in the highest total social cost, then ÔmÕ, ÔsÕ and ÔoÕ in that order. Ó 2000 Elsevier Science Ltd. All rights reserved.
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