Exploration of Car-Following Model Under Emergency Evacuation Situation

This paper presents results of an exploratory study on building up the car following model under emergency evacuation situations. A simulation scenario has been given to create a driving environment under emergency evacuation conditions and questionnaire investigations and the Miriam ECG were used to verify the validity of the driving environment from both subjective and objective aspect. Statistical analysis on perception reaction time (PRT) was also conducted. It was found that the PRT for both acceleration and deceleration are in accord with normal distributions and log-normal distributions. The mean of PRT is 1.98s and 1.87s, respectively. In addition, based on the analysis of relative speed and headway, it can be concluded that the critical headway falls in 4 to 5 seconds, indicating that when the headway is more than 5 seconds the vehicle would enter the free flow state from the following state. Finally, multiple linear regression was used to calibrate the coefficients derived from the traditional model. A regression analysis was conducted with regard to acceleration and deceleration conditions, respectively. According to the regression analysis, it can be verified that the coefficients and constant parameters are all statistically significant.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Li, Lingjie
  • Kuan, Yang Xiao
• Conference:
  • Transportation Research Board 90th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2011-1-23 to 2011-1-27
• Date: 2011

Language

• English

Media Info

• Media Type: DVD
• Features: Figures; References; Tables;
• Pagination: 16p
• Monograph Title: TRB 90th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

• TRT Terms: Car following; Disasters and emergency operations; Evacuation; Headways; Linear regression analysis; Mathematical models; Multiple regression analysis; Reaction time; Traffic simulation; Vehicle spacing
• Subject Areas: Data and Information Technology; Highways; Security and Emergencies; I71: Traffic Theory;

Filing Info

• Accession Number: 01340348
• Record Type: Publication
• Report/Paper Numbers: 11-1321
• Files: TRIS, TRB
• Created Date: May 18 2011 11:43AM