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Study on the Maximum Safe Instantaneous Input of the Steering Wheel against Rollover for Trucks on Horizontal Curves

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  • Jinliang Xu

    (School of Highway, Chang’an University, South 2nd Ring Road, Beilin District, Xi’an 710064, China)

  • Tian Xin

    (School of Highway, Chang’an University, South 2nd Ring Road, Beilin District, Xi’an 710064, China)

  • Chao Gao

    (School of Highway, Chang’an University, South 2nd Ring Road, Beilin District, Xi’an 710064, China)

  • Zhenhua Sun

    (Shaoxing Communications Investment Group Co., Ltd., No.135 Fenglin West Road, Jinghu District, Shaoxing 312000, China)

Abstract

Truck rollover crashes on horizontal curves have been recognized as one of the most serious types of crashes. Driver’s instantaneous emergency steering maneuvers (DIESM) play an important role in truck rollover crashes, but have not received much attention. In the present study, the radius of curvature of the actual vehicle travel path (AVTP) under DIESM was calculated based on the transient bicycle model. Rollover margins were used to evaluate the truck-rollover potential under DIESM. To calculate rollover margins, the lateral acceleration under DIESM was calculated based on the radius of the curvature of the AVTP. A rollover threshold formula was introduced to calculate vehicle’s rollover thresholds by distinguishing two turning conditions. According to rollover margins, the maximum safe instantaneous input of the steering wheel against rollover for trucks was obtained. Moreover, theoretical results were verified by computer simulation. Results showed: (1) The maximum safe instantaneous inputs of the steering wheel were 259°, 212°, 182°, 162°and 147°, respectively, at speeds of 60 km/h, 70 km/h, 80 km, 90 km and 100 km when the superelevation rate was 0, and (2) superelevation significantly affected truck-rollover potential; the worst turning condition was turning from the inside to the outside of the curve. Due to the consideration of the wheelbase, the centroid position, the tire’s cornering stiffness and the suspension roll gain, the prediction results were more accurate.

Suggested Citation

  • Jinliang Xu & Tian Xin & Chao Gao & Zhenhua Sun, 2022. "Study on the Maximum Safe Instantaneous Input of the Steering Wheel against Rollover for Trucks on Horizontal Curves," IJERPH, MDPI, vol. 19(4), pages 1-23, February.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:4:p:2025-:d:747260
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    References listed on IDEAS

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    1. Yanna Yin & Huiying Wen & Lu Sun & Wei Hou, 2020. "The Influence of Road Geometry on Vehicle Rollover and Skidding," IJERPH, MDPI, vol. 17(5), pages 1-17, March.
    2. Feng Chen & Xiaoxiang Ma & Suren Chen & Lin Yang, 2016. "Crash Frequency Analysis Using Hurdle Models with Random Effects Considering Short-Term Panel Data," IJERPH, MDPI, vol. 13(11), pages 1-11, October.
    3. Xinhua Mao & Changwei Yuan & Jiahua Gan & Shiqing Zhang, 2019. "Risk Factors Affecting Traffic Accidents at Urban Weaving Sections: Evidence from China," IJERPH, MDPI, vol. 16(9), pages 1-17, May.
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    Cited by:

    1. Ester Olmeda & Enrique Roberto Carrillo Li & Jorge Rodríguez Hernández & Vicente Díaz, 2022. "Lateral Dynamic Simulation of a Bus under Variable Conditions of Camber and Curvature Radius," Mathematics, MDPI, vol. 10(17), pages 1-25, August.
    2. Zhaoshi Geng & Xiaofeng Ji & Rui Cao & Mengyuan Lu & Wenwen Qin, 2022. "A Conflict Measures-Based Extreme Value Theory Approach to Predicting Truck Collisions and Identifying High-Risk Scenes on Two-Lane Rural Highways," Sustainability, MDPI, vol. 14(18), pages 1-24, September.

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