DEVS/HLA-Based Modeling and Simulation for Intelligent Transportation Systems

This article focuses on the study of the modeling and simulation of an intelligent transportation system that uses discrete event system specification (DEVS)/high-level architecture (HLA), which is the methodology of hierarchical modular modeling and distributed simulation. The authors performed distributed homogeneous traffic simulation by extending an existing developed DEVS-based I³D² transportation simulation system to an HLA-based distributed simulation environment. First, the suggested methodology gives an object-oriented and hierarchical modular modeling and simulation environment of traffic models that have complicated, dynamic features of the real world. Second, it provides easiness and extendibility of a distributed traffic simulation system design/development. Third, it offers the whole simulation time management method between distributed simulation objects through the HLA distribution standardization technique. Finally, it can offer an effective and hierarchical simulation analysis environment of a large-scale road network.