|Table of Contents|

New car following model based on time safety margin(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年06期
Page:
90-93
Research Field:
Publishing date:
2010-12-20

Info

Title:
New car following model based on time safety margin
Author(s):
XIAO Yong-jian;  RAN Qi-wu;  YANG Jian-guo
School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
Keywords:
traffic engineering;  car following model;  micro-simulation;  safety margin;  CA model;  traffic flow
PACS:
U491
DOI:
-
Abstract:
In order to find out the reason why CA(collision avoidance)car following model can not be applied to analyze the traffic capacity accurately and the way to modify this model, CA model was theoretically analyzed from the perspective of distance safety margin and time safety margin respectively. The result indicates that as the conventional CA model applied its safety margin on distance, the following interval derived from conventional CA model would be smaller than field data under the condition of low speed, while it would be larger than field data under the condition of high speed, and it made CA model can not be applied to analyze traffic capacity accurately. To apply the safety margin on time can overcome the shortcoming of conventional CA model under the condition of low and medium speed, and the simulation data matches the field data well when the speed of traffic flow is not larger than 60 km/h. 1 fig, 11 refs.

References:

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Last Update: 2010-12-20