Monthly Archives: June 2014

Simulating DRT: Sim-VIC presentation, June 2014

On Friday 13 June 2014, Dr Nicole Ronald gave a presentation on simulating DRT to the Sim-VIC research community at RMIT. This community consists of researchers working in simulation, mostly coming from agent-based simulation.

Nicole spoke about three models of DRT that have been built as part of the iMoD project: the original Delphi prototype, the SUMO-based model SUMOoD, and a model currently in development based on MATSim. The aim of this work was to explore the capabilities and limitations of existing software and identify the potential of various tools that can be used for modelling DRT.

All three models have been set up with a basic DRT scheme which optimises only single trip, “travel now” requests by minimising passenger travel time. No other transport modes were included, to ensure comparison between models; the Delphi prototype models DRT only.

Traffic microsimulation software is useful for evaluating door-to-door DRT in small regions, however more work is needed in predicting travel speeds for routing. MATSim has proved useful for larger areas, however this model currently does not make use of iterations (that is, no scoring and replanning occurs). Models of DRT in isolation are useful to get a quick overview of coverage and operation, however provide no indication of interaction with other modes of transport, and depending on the richness of the transport network representation and routing algorithms, could provide overly optimistic results.

Future work includes generalising the models to handle different optimisation algorithms and DRT schemes and beginning to explore different locations, as well as continuing our work on estimating demand. The iMoD project is grateful to Sim-VIC for the opportunity to present work-in-progress.

Internship graduation project: estimating demand for DRT

chenhao

On 4 June 2014, Chenhao Fan, a final-year student from Southeast University, Nanjing, China, presented his graduation project on estimating demand for DRT services.

Chenhao has spent four months in Melbourne working with Assoc Prof Russell Thompson and Dr Nicole Ronald, as well as data and policy experts from the Department of Transport, Planning and Local Infrastructure, State Government of Victoria. He analysed VISTA and ABS census data to obtain preliminary estimates of trips per household.