Article: Evaluation of the rationality of urban road traffic sign setting in Nanchang city based on real vehicle test Journal: International Journal of Vehicle Systems Modelling and Testing (IJVSMT) 2025 Vol.19 No.1 pp.1 - 27 Abstract: The content and density of road traffic signs affect the driving behaviour of drivers and the smoothness of urban traffic. There is a lack of quantitative research methods on the current information threshold of traffic signs. In order to quantitatively classify the informativeness threshold of traffic signs and better explore the reasonableness of traffic sign setting, this paper designed a real-vehicle experiment, adopted the principal component analysis (PCA) method, conducted multi-dimensional analysis of pupil area, fixation intensity, heart rate change rate and heart rate variability, quantified the traffic sign information by using the information entropy theory and introduced the comfort index S, and established regression relations. Driving visual comfort was quantitatively classified into five levels, and it was indicated that the traffic sign information density should be less than 0.373 bits/m and maximum should not exceed 0.507 bits/m. Inderscience Publishers - linking academia, business and industry through research

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Title: Evaluation of the rationality of urban road traffic sign setting in Nanchang city based on real vehicle test

Authors: Hui Hu; Feng He; Youzhang Yang; Yunwei Meng; Haoxiang Zhao; Guangyan Qing

Addresses: Nanchang Urban Planning & Design Institute Group Co., Ltd., Nanchang, 330038, China ' Nanchang Urban Planning & Design Institute Group Co., Ltd., Nanchang, 330038, China ' Nanchang Urban Planning & Design Institute Group Co., Ltd., Nanchang, 330038, China ' Chongqing Key Laboratory of Intelligent Integrated and Multidimensional Transportation System, Chongqing Jiaotong University, Chongqing, 400074, China ' Chongqing Key Laboratory of Intelligent Integrated and Multidimensional Transportation System, Chongqing Jiaotong University, Chongqing, 400074, China ' China Merchants Roadway Information Technology (Chongqing) Co., Ltd., Chongqing, 400067, China

Abstract: The content and density of road traffic signs affect the driving behaviour of drivers and the smoothness of urban traffic. There is a lack of quantitative research methods on the current information threshold of traffic signs. In order to quantitatively classify the informativeness threshold of traffic signs and better explore the reasonableness of traffic sign setting, this paper designed a real-vehicle experiment, adopted the principal component analysis (PCA) method, conducted multi-dimensional analysis of pupil area, fixation intensity, heart rate change rate and heart rate variability, quantified the traffic sign information by using the information entropy theory and introduced the comfort index S, and established regression relations. Driving visual comfort was quantitatively classified into five levels, and it was indicated that the traffic sign information density should be less than 0.373 bits/m and maximum should not exceed 0.507 bits/m.

Keywords: urban road; traffic sign; real vehicle test; visual comfort; amount of information; information density; traffic safety; pupil area; heart rate.

DOI: 10.1504/IJVSMT.2025.145563

International Journal of Vehicle Systems Modelling and Testing, 2025 Vol.19 No.1, pp.1 - 27

Received: 29 Jul 2024
Accepted: 27 Nov 2024
Published online: 04 Apr 2025 *

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Title: Evaluation of the rationality of urban road traffic sign setting in Nanchang city based on real vehicle test

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