详情

原文传递 Particle hopping vs. fluid-dynamical models for traffic flow

题名：	Particle hopping vs. fluid-dynamical models for traffic flow
作者：	Nagel, K.;
关键词：	32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION ;42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; LAND TRANSPORT; MATHEMATICAL MODELS; TRANSPORTATION SYSTEMS; FLUID FLOW; VEHICLES; TRAFFIC CONTROL
摘要：	Although particle hopping models have been introduced into traffic science in the 19509, their systematic use has only started recently. Two reasons for this are, that they are advantageous on modem computers, and that recent theoretical developments allow analytical understanding of their properties and therefore more confidence for their use. In principle, particle hopping models fit between microscopic models for driving and fluiddynamical models for traffic flow. In this sense, they also help closing the conceptual gap between these two. This paper shows connections between particle hopping models and traffic flow theory. It shows that the hydrodynamical limits of certain particle hopping models correspond to the Lighthill-Whitham theory for traffic flow, and that only slightly more complex particle hopping models produce already the correct traffic jam dynamics, consistent with recent fluid-dynamical models for traffic flow. By doing so, this paper establishes that, on the macroscopic level, particle hopping models are at least as good as fluid-dynamical models. Yet, particle hopping models have at least two advantages over fluid-dynamical models: they straightforwardly allow microscopic simulations, and they include stochasticity.
总页数：	16p
报告类型：	科技报告