Time-Dependent Discrete Network Design Frameworks Considering Land Use

Abstract

Optimization frameworks for discrete road network design are proposed considering the land-use transport interaction over time. Unlike existing models, the optimization frameworks can determine optimal designs automatically without trial-and-error once the aims are clearly defined. Moreover, these frameworks allow evaluation of the impacts of optimal designs on related parties including landowners, toll road operators, transit operators, and road users, and help network planners and profit-makers with decisionmaking by eliminating many alternative designs. A numerical study is set up to examine road network design's effects on these related parties under 3 road building schemes: exact cost recovery, build-operate-transfer, and cross-subsidization. Results show that changes in landowner profits are not the same after implementing any scheme. These unequal changes raise the issue of the landowner equity, implying that the government must consider trade-offs between parties' objectives carefully.