Number of place names of freeway guide signs based on data envelopment analysis

YANG Yan-qun1 QIAO Ting1 ZHENG Xin-yi2

(1.College of Civil Engineering, Fuzhou University, Fuzhou, Fujian Province, China 350108)
(2.College of Humanities and Social Sciences, Fuzhou University, Fuzhou, Fujian Province, China 350108)
【Knowledge Link】event-related potential (ERP)

【Abstract】As road networks are getting increasingly complicated, there are more and more traffic accidents caused by overloaded information of the guide signs at present. To comprehensively determine the reasonable number of place names for guide signs on freeway interchange and propose corresponding suggestions to improve the setting of these signs, we studied the setting of guide signs on the driver’s response efficiency based on the data envelopment analysis (DEA) method, selected representative indexes reflecting the driver’s cognitive response to guide signs, and constructed a macro model for the study of the number of place names on freeway guide signs. We used the eye tracker and electroencephalogram (EEG) while performing the driving simulation tests in relevant scenarios and obtained eye movement parameters, brain wave data, and driving behavior of the subjects in six different scenarios. When the model was used for data analysis, the mean overall efficiency values of the driver’s cognitive response to the guide signs in six scenarios (the numbers of place names were 4, 5, 6, 7, 8, and 9) were observed to be 0.983, 0.956, 0.902, 0.796, 0.699, and 0.617, respectively. Then, according to the different index sets, we performed the index sensitivity analysis to obtain the overall efficiency values of the drivers in the six scenarios. The results reveal that as the number of place names rises, the mean overall efficiency of the driver’s cognitive response to guide signs exhibits a downward trend. When information volume exceeds the drivers’ cognitive threshold, the system’s overall efficiency value decreases rapidly. Drivers have different levels of cognitive response efficiency in different scenarios, so we should make targeted modifications to response efficiency by improving the layout design on the guide signs. From the perspective of a driver’s cognitive response, the results show that the threshold of place names of freeway guide signs is suggested at 6. This study used the DEA method to construct a comprehensive index system to analyze the number of place names of guide signs from the perspective of a driver’s cognitive response to the guide signs and provided a practical reference for the layout of the guide signs on freeway interchange in China.

【Keywords】 traffic engineering; guide sign; data envelopment analysis; number of place names; cognitive efficiency;

【DOI】

【Funds】 Social Science Foundation of Fujian Province, China (FJ2016B156)

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This Article

ISSN:1001-7372

CN: 61-1313/U

Vol 33, No. 06, Pages 137-146

June 2020

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Article Outline

Knowledge

Abstract

  • 0 Introduction
  • 1 Evaluation method
  • 2 Test design
  • 3 Results and discussion
  • 4 Conclusions
  • References