Volume 44 Issue 1
Feb.  2026
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Article Navigation >  Journal of Transport Information and Safety  > 2026  >  44(1): 62-74
LIU Tong, XU Donghao, LIU Tangzhi, SUN Yezhe, LI Qixia. An Evaluation Method of Visual-audiovisual Interventions Effectiveness for Sharp Bends on Mountainous Roads Based on Driving Simulation Tests[J]. Journal of Transport Information and Safety, 2026, 44(1): 62-74. doi: 10.3963/j.jssn.1674-4861.2026.01.006
Citation: LIU Tong, XU Donghao, LIU Tangzhi, SUN Yezhe, LI Qixia. An Evaluation Method of Visual-audiovisual Interventions Effectiveness for Sharp Bends on Mountainous Roads Based on Driving Simulation Tests[J]. Journal of Transport Information and Safety, 2026, 44(1): 62-74. doi: 10.3963/j.jssn.1674-4861.2026.01.006
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An Evaluation Method of Visual-audiovisual Interventions Effectiveness for Sharp Bends on Mountainous Roads Based on Driving Simulation Tests

doi: 10.3963/j.jssn.1674-4861.2026.01.006
  • 1.

    Chongqing Key Laboratory of Intelligent Integrated Three-dimensional Transportation, Chongqing Jiaotong University, Chongqing 400074, China

  • 2.

    College of Traffic & Transportation, Chongqing Jiaotong University, Chongqing 400074, China

  • 3.

    School of Automotive Engineering, Guizhou Communications Polytechnic University, Guiyang 551499, China

  • Received Date: 2025-08-10
    Available Online: 2026-08-28
    Abstract
  • Existing research on the deployment of safety interventions primarily focuses on urban roads and highways. However, methods for evaluating the effectiveness of safety interventions at sharp bends on mountain roads remain limited. To clarify the effectiveness of different safety interventions and the basis for placement, a driving simulation scenario is established based on the S545 section in Yongchuan, Chongqing. Twenty-eight drivers are recruited to participate in the driving simulation tests. Variable message signs (VMS) in four colors: red, yellow, blue, and green—are selected as visual interventions. On the basis of the steady-state noise from the driving simulator, on-board warning sounds with increases of 8, 11.5, and 15 dB are added as auditory interventions. Single-modality and audiovisual combination experiments are designed, and a model for calculating the distance for placing interventions is proposed. The effectiveness of different interventions is comprehensively evaluated by analyzing the average speed, peak acceleration, and lateral deviation rate. The results indicate that, at sharp bends on mountain roads, the distances for placing visual and auditory interventions are 31.4 m and 41.7 m, respectively. The yellow VMS is the optimal single visual intervention, with reductions in average speed, peak acceleration, and lateral deviation rate of 22.3%, 34.7%, and 58.4%, respectively. The 11.5 dB increase condition is the optimal single auditory intervention, with reductions in average speed, peak acceleration, and lateral deviation rate of 17.3%, 38.5%, and 43.7%, respectively. Both the yellow VMS single visual intervention and the 11.5 dB auditory intervention yield good results. The yellow VMS and 11.5 dB combination intervention achieves the best effect, with reductions in average speed, peak acceleration, and lateral deviation rate of 26.0%, 40.3%, and 66.9%, respectively. This combination intervention is superior to single interventions and is recommended as the preferred deployment scheme for sharp bends on mountain roads.

     

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