Assessment of Driving Safety on Low-grade Roads Based on Lorenz Scatter Plot

doi:10.11908/j.issn.0253-374x.22065

Home > Archive>Volume 51, Issue 8, 2023 >1259-1266. DOI:10.11908/j.issn.0253-374x.22065

Assessment of Driving Safety on Low-grade Roads Based on Lorenz Scatter Plot
DOI:
                        10.11908/j.issn.0253-374x.22065
                    
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                        LIU BenminLIU Benmin
Key Laboratory of Road and Traffic Engineering of the Ministry of Education，Tongji University，Shanghai 201804，China
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SHI BingyuSHI Bingyu
Key Laboratory of Road and Traffic Engineering of the Ministry of Education，Tongji University，Shanghai 201804，China
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LIAO YanfengLIAO Yanfeng
Key Laboratory of Road and Traffic Engineering of the Ministry of Education，Tongji University，Shanghai 201804，China
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Affiliation:Key Laboratory of Road and Traffic Engineering of the Ministry of Education，Tongji University，Shanghai 201804，China
Clc Number:U491
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Abstract:

The low-grade road driving data of 22 drivers were collected through driving simulation experiment， and the driving fluctuation index was proposed based on Lorenz scatter plot. Then， the instability fluctuation thresholds of tangential acceleration， lateral acceleration and steering wheel speed were obtained （0.993， 1.322 and 0.669 respectively）. Finally， the fuzzy logic theory was used to synthesize the three indicators to complete the classification of the safety state. It is found that the fluctuation of tangential and lateral acceleration is affected by the interaction of weather scene and curve radius， and the dangerous instability is most likely to occur on the 15 m curve in the icing section. However， the instability of steering wheel speed is only affected by the curve radius， and increases with the increase of curve radius.

Key words:traffic safety;driving fluctuation;driving safety assessment;Lorenz scatter plot;fuzzy logic

Reference

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LIU Benmin, SHI Bingyu, LIAO Yanfeng. Assessment of Driving Safety on Low-grade Roads Based on Lorenz Scatter Plot[J].同济大学学报(自然科学版),2023,51(8):1259~1266

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Received:February 22,2022
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Online: August 28,2023
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