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TitleDecision support system for the design of sustainable demand responsive transport
Author(s)Dias, Ana
Telhada, José
Carvalho, Maria Sameiro
KeywordsDemand responsive transport
Sustainable transport
Dynamic vehicle scheduling and routing
Simulation modeling
Decision support system
Transport system evaluation
Issue dateNov-2011
Abstract(s)The provision of traditional public transport services in rural areas have shown to be very inefficient and ineffective. In fact, rural areas are naturally categorized by low levels of population density leading to complex demand patterns (low levels and high spatial and temporal dispersion), which leads to low levels of service of conventional transport services (low frequencies, usage of old vehicles, etc). Demand Responsive Transport systems have been seen as an effective alternative solution already adopted in several countries. There are however some issues concerning DRT costs and benefits that still have to be addressed. In this research work an integrated analysis incorporating both internal and external costs is proposed aiming to support decision makers investigating the impacts and performance measures related to the adoption of a flexible transportation system solution. Additionally, DRT systems are highly dependent on the correct calibration of some organizational and functional parameters. In this paper, a comprehensive framework to support decision-makers in the design and planning of flexible transportation systems is proposed. The developed approach allows the simulation of different scenarios corresponding to different design alternative solutions. Accurate estimation of their global performance, in terms of both viability and sustainability, can be obtained providing effective support in the design and operational stages of a DRT system implementation in low density areas.
AccessOpen access
Appears in Collections:CAlg - Resumos em livros de atas/Abstracts in proceedings

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