中南大学学报（自然科学版）2017，Vol.48Issue(10)：2800-2807,8.DOI:10.11817/j.issn.1672-7207.2017.10.033
高速公路交通流元胞自动机建模及大货车的影响分析
Modeling with cellular automata and influence analysis of trucks on freeway traffic flow
摘要
Abstract
Based on the analysis of traffic characteristics of four-lane freeways in China, lane-changing types were classified into tendentious and non-tendentious ones according to the motivation, and the legal lane-changing rules were described concisely. The corresponding cellular automaton model was proposed, which was calibrated and verified with the measured traffic flow parameters. The results show that, with the increase of the truck ratio, the fast lane occupation by trucks increases and the speed of cars decreases. The above changes are more significant when the truck ratio is less than 0.25 and is correlated with the density. When the truck ratio is very small, as the truck power performance degrades, the speed of cars decreases and the lane-changing rate and conflict rate of cars increase. The above changes are most significant when the density is in the medium range. When it is near the critical density, the typical moving bottlenecks and segregation effects can be observed at random when the truck ratio changes.关键词
高速公路/双车道交通流/大货车/换道规则/元胞自动机/模拟Key words
four-lane freeway/two-lane traffic flow/truck/lane-changing rule/cellular automata/simulation分类
交通工程引用本文复制引用
杨柳,龙科军,黄中祥..高速公路交通流元胞自动机建模及大货车的影响分析[J].中南大学学报（自然科学版）,2017,48(10):2800-2807,8.基金项目
国家自然科学基金资助项目(51338002,51678076,51408058) （51338002,51678076,51408058）
湖南省教育厅资助项目(16B008) （16B008）
长沙理工大学公路工程教育部重点实验室开放基金资助项目(KFJ130101)(Projects(51338002, 51678076, 51408058) supported by the National Natural Science Foundation of China （KFJ130101）
Project(16B008) supported by Education Department of Hunan Province （16B008）
Project(KFJ130101) supported by Open Fund of the Key Laboratory of Highway Engineering of Ministry of Education, Changsha University of Science & Technology) （KFJ130101）
