Networks and Spatial Economics 

About: Networks and Spatial Economics is an academic journal published by Springer Science+Business Media. The journal publishes majorly in the area(s): Network planning and design & Flow network. It has an ISSN identifier of 1566-113X. Over the lifetime, 700 publications have been published receiving 22978 citations.

Foundations of dynamic traffic assignment : the past, the present and the future

Abstract: Dynamic Traffic Assignment (DTA) has evolved substantially since the pioneering work of Merchant and Nemhauser. Numerous formulations and solutions approaches have been introduced ranging from mathematical programming, to variational inequality, optimal control, and simulation-based. The aim of this special issue is to document the main existing DTA approaches for future reference. This opening paper will summarize the current understanding of DTA, review the existing literature, make the connection to the approaches presented in this special issue, and attempt to hypothesize about the future.

Microsimulation of Urban Development and Location Choices: Design and Implementation of UrbanSim

Abstract: UrbanSim is a new urban simulation model, developed over the past several years, which is now operational in three urban areas in the United States. The model system is designed to address emerging needs to better coordinate transportation and land use planning as a result of recognition of the strong interactions between land use and transportation, increasing pressure from federal transportation and environmental legislation, and growing adoption of state growth management programs. The model system is implemented as a set of interacting model components that represent the major actors and choices in the urban system, including household moving and residential location, business choices of employment location, and developer choices of locations and types of real estate development, all subject to the influence of governmental transportation and land use policy scenarios. The model design is unusual in the degree of disaggregation of space, time, and agents, and in the adoption of a dynamic disequilibrium approach. The objective of this paper is to describe the entire system at a sufficient level of detail to convey the key specification and design choices made in implementing the system.

Dynamic network traffic assignment and simulation methodology for advanced system management applications

Abstract: Evaluation and operation of intelligent transportation system technologies in transportation networks give rise to methodological capabilities that require description of the dynamics of network traffic flows over time and space. Both descriptive and normative dynamic traffic assignment capabilities are required in this environment. Several dynamic network flow modeling problem formulations that arise in this context are discussed, and simulation-assignment procedures are described for these problems. A dynamic traffic assignment (DTA) system for advanced traffic network management is described. It is built around a traffic simulation-assignment modeling framework, which describes the evolution of traffic patterns in the network for given traffic loading under particular control measures and route guidance information supply strategies to individual motorists. The simulator is also embedded in an interactive search algorithm to determine optimal route guidance instructions to motorists. Numerical experiments with the model illustrate the relative effectiveness of different information supply strategies under different user behavior response rules.

ILUTE: An Operational Prototype of a Comprehensive Microsimulation Model of Urban Systems

Abstract: This paper describes the development of an operational proto type for a comprehensive microsimulation model of urban systems. It examines several important design advances that emerged during the transition from a conceptual framework to operational code. ILUTE (Integrated Land Use, Transportation, Environment) simulates the evolution of an integrated urban system over an extended period of time . This model is intended to replace conventional models for the analysis of a broad range of transportation, housing and other urban policies. An overview of the ILUTE framework was presented at the 9 th IATBR conference (Miller and Salvini, 2001). Since then, considerable progress has been made on the overall model and its component submodels. At present, an operational prototype is being tested using data from the Greater Toronto Area. Disaggregate information for the model is synthesized from census data, travel survey data, activity data, and randomly generate d proxy data. ILUTE is based on the "ideal model" described in the fina l report of the Transit Cooperative Research Program's (TCRP) Project H-12, “Integrated Urban Models for Simulation of Transit and Land-Use Policies” (Miller, Kriger, and Hunt, 1998).

Application of Accessibility Based Methods for Vulnerability Analysis of Strategic Road Networks

Abstract: This paper describes the development of a method for strategic assessment of vulnerability in road networks. Our vulnerability analysis considers the socio-economic impacts of network degradation, on the basis of changes in the levels of accessibility provided by the degraded network. A number of standard indices of accessibility are considered, including generalised travel cost, the Hansen integral accessibility index, and the ARIA index used in Australia to assess levels of remoteness in rural areas. Simple case studies of a national strategic road network and a regional road network are used to illustrate both the general approach and specific implementations.