5. Travel Demand Modelling
Travel demand modeling is a critical aspect of transportation planning that addresses how individuals make decisions regarding transport use. It encompasses fundamental concepts such as demand and supply, equilibrium, and a classical four-stage demand model that helps predict travel patterns. The chapter emphasizes how various disciplines inform transport modeling and the need for a structured approach to understand travel decisions.
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What we have learnt
- Travel demand is considered a derived demand, driven by the necessity to engage in various activities across locations.
- Equilibrium in transport refers to the balance between travel demand and supply, visually represented through demand-supply curves.
- The four-stage model of travel demand modeling includes trip generation, trip distribution, modal split, and trip assignment.
Key Concepts
- -- Transport Modeling
- A study of the behavior of individuals regarding transport decisions, utilizing simplified models to understand key relationships.
- -- Demand and Supply
- Fundamental economic concepts applied to transport with demand being derived from the need to travel for various activities.
- -- Equilibrium
- The point where travel demand and supply curves intersect, indicating the balance between the quantity of travel demanded and the quantity supplied.
- -- FourStage Model
- A modeling framework to analyze travel behavior consisting of trip generation, trip distribution, modal split, and trip assignment.
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