TY - JOUR
T1 - Dynamic micro-assignment modeling approach for integrated multimodal urban corridor management
AU - Zhou, Xuesong
AU - Mahmassani, Hani S.
AU - Zhang, Kuilin
N1 - Funding Information:
This paper is based on research work partially supported at the University of Maryland by the Federal Highway Administration (FHWA), US Department of Transportation. The authors are grateful for the assistance and encouragement of Dr. Henry Lieu of FHWA. Several graduate research assistants in the UMD DTA team, especially Xiang Fei, Sevgi Erdogan and Chung-Cheng Lu, have contributed to building the network and performing the analysis described in this paper. The final version of the paper has greatly benefited from the comments of two anonymous referees. The work presented in this paper remains the sole responsibility of the authors.
PY - 2008/4
Y1 - 2008/4
N2 - Development and analysis of demand management strategies for integrated multimodal urban corridor management requires application of a new generation of demand modeling and network analysis tools. This paper describes the development of a dynamic trip micro-assignment and (meso) simulation system that incorporates individual tripmaker choices of travel mode, departure time and route in multimodal urban transportation networks (with different travel modes such as drive alone, shared ride, bus rapid transit and metro rail). These travel choice dimensions are integrated in a stochastic utility maximization framework that considers multiple user decision criteria such as travel time, travel cost, schedule delay, as well as travel time reliability. A variational inequality model is first proposed to describe the general stochastic dynamic traffic user equilibrium problem. For a typical case that assumes the logit-based alternative choice model, this paper develops an equivalent gap function-based optimization formulation and a heuristic iterative solution procedure. Based on a multi-dimensional network representation, an efficient time-dependent least cost path algorithm is embedded to generate an intermodal route choice set that recognizes time-dependent mode transfer costs and feasible mode transfer sequences. A two-stage estimation procedure that can systematically utilize historical static demand information, time-dependent link counts, as well as empirically calibrated stochastic departure time choice models is proposed to infer commuters' preferred arrival time distribution, which is important in modeling departure time choice dynamics. A case study based on a large-scale multimodal transportation network (adapted from the Baltimore-Washington corridor) is presented to illustrate the capabilities of the methodology and provide insight into the potential benefit of integrated multimodal corridor management.
AB - Development and analysis of demand management strategies for integrated multimodal urban corridor management requires application of a new generation of demand modeling and network analysis tools. This paper describes the development of a dynamic trip micro-assignment and (meso) simulation system that incorporates individual tripmaker choices of travel mode, departure time and route in multimodal urban transportation networks (with different travel modes such as drive alone, shared ride, bus rapid transit and metro rail). These travel choice dimensions are integrated in a stochastic utility maximization framework that considers multiple user decision criteria such as travel time, travel cost, schedule delay, as well as travel time reliability. A variational inequality model is first proposed to describe the general stochastic dynamic traffic user equilibrium problem. For a typical case that assumes the logit-based alternative choice model, this paper develops an equivalent gap function-based optimization formulation and a heuristic iterative solution procedure. Based on a multi-dimensional network representation, an efficient time-dependent least cost path algorithm is embedded to generate an intermodal route choice set that recognizes time-dependent mode transfer costs and feasible mode transfer sequences. A two-stage estimation procedure that can systematically utilize historical static demand information, time-dependent link counts, as well as empirically calibrated stochastic departure time choice models is proposed to infer commuters' preferred arrival time distribution, which is important in modeling departure time choice dynamics. A case study based on a large-scale multimodal transportation network (adapted from the Baltimore-Washington corridor) is presented to illustrate the capabilities of the methodology and provide insight into the potential benefit of integrated multimodal corridor management.
KW - Demand management
KW - Departure time dynamics
KW - Dynamic traffic assignment
KW - Integrated corridor management
KW - Intelligent transportation systems
KW - Intermodal shortest paths
KW - Multimodal networks
KW - Supply-demand integration
KW - Travel time reliability
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U2 - 10.1016/j.trc.2007.07.002
DO - 10.1016/j.trc.2007.07.002
M3 - Article
AN - SCOPUS:38849150228
SN - 0968-090X
VL - 16
SP - 167
EP - 186
JO - Transportation Research Part C: Emerging Technologies
JF - Transportation Research Part C: Emerging Technologies
IS - 2
ER -