Transportation Research Record Journal of the Transportation Research Board · 1987 · 10 citations · 1 references
PlanningTransportation PlanningTransportTransportationTransportation EngineeringTransport ModellingTransportation EconomicsTransportation ModelsTravel DemandTrip DistributionTrip GenerationCapacity ConstraintsForecasting Travel DemandIntercity Passenger TransportTransportation Network ModelingTravel Behavior ModelingTravel Demand AnalysisTrip Distribution ModelingTrip Generation Modeling
Safwat and Magnanti have developed a combined trip-generation, trip-distribution, modal-split, and trip-assignment model that can predict demand and performance levels on large-scale transportation networks simultaneously, that is, a Simultaneous Transportation Equilibrium Model (STEM). The major objective in this paper is to assess the behavioral applicability of the STEM methodology by using it to analyze intercity passenger travel in Egypt. Though results were greatly influenced by the misspecification of the trip-distribution model (particularly its attractiveness measure) and the existence of severe fleet capacity constraints (particularly along the Cairo-Banha-Tanta corridor in the middle Delta region), there were strong indications that the approach was able to predict rational behavioral responses of users to policy changes in the system. Appropriate modifications to current specifications, which can easily be incorporated within the STEM framework, were suggested. Computational issues of the application are addressed in detail in a companion paper by Safwat in this Record (Transportation Research Record No. 1120, pp 60-67).
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