Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (7): 25-30.

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Simulated Analysis of Coordinated Control System for Ramp on Freeway

Xu Lun-hui  Lu Wang-yi  Zhou Jing   

  1. School of Traffic and Communications , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2007-10-31 Online:2007-07-25 Published:2007-07-25
  • Contact: 许伦辉(1965-) ，男，教授，博士，主要从事智能交通系统、交通环境与交通安全、交通系统建模与仿真的研究. E-mail:lanhuixu@21cn.com
  • About author:许伦辉(1965-) ，男，教授，博士，主要从事智能交通系统、交通环境与交通安全、交通系统建模与仿真的研究.

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Abstract:

Based on the macroscopical stable continuous-flow traffic mode and the occupancy adjustment strategy , this paper proposes a coordinated control system of ramp on freeway by using Visual Basic software. The proposed system is then used to simulate the dynamic operation mode of freeway , and the corresponding operation and calculation effectiveness are finally verified by data simulation. The results show that the proposed control system is of good dynamic performance , and possesses the advantages of eliminating traffic jams , maintaining traffic-flow stability and ensuring efficient and safe drive.

Key words: freeway, coordinated control, ramp control, control strategy, simulation