Reliability Analysis of Vehicle Stability on Combined Horizontal and Vertical Alignments: Driving Safety Perspective

You, Kesi; Sun, Lu

doi:10.1061/(asce)te.1943-5436.0000559

Cited by 27 publications

(8 citation statements)

References 16 publications

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“…In addition, this method cannot exclude the influence of bad weather (ice, snow, rain, and fog) on the driver, indirectly affecting the possible rollover of the vehicle. There are relevant references [15,[25][26][27][28][29][30][31][32] to study the influence of road geometry on the dynamic indicators of vehicle rollover and skidding. However, no researchers have ever studied the impact of unfavorable geometric combinations on vehicle' rollover and skidding.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Road Geometry on Vehicle Rollover and Skidding

Yin

Wen

Sun

et al. 2020

IJERPH

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This paper analyzes the influence of single and combined unfavorable road geometry on rollover and skidding risks of D-class mid-sized sport utility vehicles (SUVs) with front-wheel drive for roads with design speeds at 80 km/h. A closed-loop simulation model of human-vehicle-road interactions is established to examine the systematic influence of road geometry on vehicle rollover and skidding. The effects of different road geometry on rollover and skidding on SUVs are studied for pavement surface with good and poor friction when vehicles are in the action of steady state cornering. The rollover and skidding risks of the most unfavorable road segments are assessed. The critical wheel is defined by the threshold of skidding during curve negotiation. The results found that SUVs are not easy to rollover on the most unfavorable roads, regardless of good or poor friction of pavement surface. The safety margin of rollover is greater than that of skidding. The safety margin of skidding is minimal on poor friction roads. Therefore, for the sake of driving safety, it is not recommended to design the roads with these unfavorable road geometry combinations

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Section: Introductionmentioning

confidence: 99%

The Influence of Road Geometry on Vehicle Rollover and Skidding

Yin

Wen

Sun

et al. 2020

IJERPH

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“…You et al [43] used different performance functions for calculating the probability of vehicle failure modes (skidding and rollover at horizontal curves). You and Sun [44] established a dynamic simulation model, considering threedimensional alignment, for reliability analysis of vehicle stability on the combined horizontal and vertical curve. Shin and Lee [45] presented a reliability-based analysis to assess vehicle safety on horizontal curves based on vehicle dynamics on windy environments.…”

Section: Reliability Applications In Transportation Engineeringmentioning

confidence: 99%

Reliability-Based Analysis of Sight Distance Modelling for Traffic Safety

Santos-Berbel

Essa

Sayed

et al. 2017

Journal of Advanced Transportation

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Sight distance is of the utmost importance for traffic safety. The consideration of three-dimensional (3D) available sight distance (ASD) in geometric design has been supported by several researchers. However, existing ASD estimation methods are two-dimensional (2D) in nature, which do not evaluate varying visibility conditions. This paper compares different methodologies of modelling the ASD. The ASD of 402 horizontal curves, located in twelve in-service two-lane rural highways, was analyzed. Three ASD estimation methods were used which include a 2D method and two different 3D methods. The ASD results obtained through 2D and 3D methodologies are compared. Also, the different conditions of the existing roadside features or geometric elements, under which the 3D ASD estimation is important, were identified. Next, reliability theory is utilized to evaluate the risk level (probability of noncompliance,Pnc) associated with limited sight distance for each ASD modelling method. The results of the comparison emphasized the importance of considering the 3D modelled sight distance when evaluating the associated risk either in highway design or during the service life. In addition, the results indicated that the ASD modelling approach can have a significant impact on the estimation of the safety of highway design.

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“…road design) is relatively scarce. You and colleagues [25][26][27] have constructed the relationship between the probability of rollover, sideslip, skidding, and the dynamics indexes based on the risk analysis, and the probability of accidents in each section of the highway has been calculated via the fault tree and Monte Carlo method as the safety evaluation results of highway alignment design. However, there is a problem in the definition of accident type (i.e.…”

Section: Introductionmentioning

confidence: 99%

Evaluating safety performance of highway alignment utilizing fault tree analysis and energy method

Chen

Wang³

et al. 2019

Advances in Mechanical Engineering

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To improve the accuracy of road safety evaluation, this article presents a method to calculate the average crash probability for highway sections based on fault tree and energy method. First, the average crash probability of sections was formulated based on fault tree theory, taking lateral instability, rollover, and rear-end crash into account. Second, an instability factor, which described the extent of steering instability and tire sideslip, was proposed based on energy method. Thereafter, the relationships between the instability factor and probability of lateral instability crash, the load transfer ratio and probability of rollover crash, the available sight distance and probability of rear-end crash were investigated. Then, the driver-vehicle-road multi-body dynamics model was developed based on the three-dimensional alignments of Ning-Luo Expressway using CarSim, the dynamics indexes such as lateral velocity, wheel vertical load were obtained, and the average crash probability of each section was calculated. Finally, the correlation between average crash probability and the average number of accidents was analyzed to validate the accuracy of the proposed method. Results reveal that the proposed method can improve the accuracy of evaluation results, compared with existing methods, thus providing theoretical basis for black spot identification of both design phase and in-service highways.

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Reliability Analysis of Vehicle Stability on Combined Horizontal and Vertical Alignments: Driving Safety Perspective

Cited by 27 publications

References 16 publications

The Influence of Road Geometry on Vehicle Rollover and Skidding

The Influence of Road Geometry on Vehicle Rollover and Skidding

Reliability-Based Analysis of Sight Distance Modelling for Traffic Safety

Evaluating safety performance of highway alignment utilizing fault tree analysis and energy method

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