Probabilistic assessment of road vehicle safety in windy environments

Snæbjörnsson, Jónas Þór; Baker, Chris; Sigbjörnsson, Ragnar

doi:10.1016/j.jweia.2007.02.020

Cited by 67 publications

(39 citation statements)

References 17 publications

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“…Baker (1987) established the analytic model of vehicle under crosswind and investigated the critical wind speed for vehicle safety based on wind tunnel tests. Snaebjornsson et al (2007) introduced a response hyper-surface in the space of basic variables into the limit state function of vehicle performance and quantified the risk of safety by safety index. Chen and Chen (2011) adopted the response surface method to provide an efficient estimation of accident risks.…”

Section: Introductionmentioning

confidence: 99%

Effects of wind barrier on the safety of vehicles driven on bridges

Chen

Wang

et al. 2015

Journal of Wind Engineering and Industrial Aerodynamics

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Section: Introductionmentioning

confidence: 99%

Effects of wind barrier on the safety of vehicles driven on bridges

Chen

Wang

et al. 2015

Journal of Wind Engineering and Industrial Aerodynamics

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“…investigated parameters influencing wind-related accidents of road vehicles [21]. These studies proposed a reliability analysis for road vehicles in their separate ways, but they did not provide an analytical model for applying MPP-based FORM.…”

Section: Aerodynamic Actionsmentioning

confidence: 99%

“…Reliability-based accident risk studies have been conducted considering the uncertainties associated with a vehicle model [20,21]. However, existing studies have only considered vehicles on straight roads and adopted the rigid-body vehicle model.…”

Section: Introductionmentioning

confidence: 99%

Reliability-Based Vehicle Safety Assessment and Design Optimization of Roadway Radius and Speed Limit in Windy Environments

Shin

Lee

2014

Journal of Mechanical Design

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This paper presents a reliability-based analysis of road vehicle accidents and the optimization of roadway radius and speed limit design based on vehicle dynamics, mainly focusing on windy environments. The performance functions are formulated as failure modes of vehicle rollover and sideslip and are defined on a finite set of basic variables with probabilistic characteristics, so-called random variables. The random variables are vehicle speed, steer angle, tire-road friction coefficient, road bank angle, and wind speed. The probability of accident was evaluated using the first-order reliability method (FORM) and numerical studies were conducted using a single-unit truck model. The analysis demonstrates that wind is a significant factor when assessing vehicle safety on roads, and probabilistic studies such as reliability-based design optimization (RBDO) are necessarily required to enhance vehicle safety in windy environments. Accordingly, design optimization of roadway radius and speed limit was conducted, and new designs were proposed satisfying the target reliability. This study suggests that probabilistic mechanics and theory can be of value for analysis and design of wind-related vehicle safety.

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“…Then, if i S Z i ≈ 1, Equation (14) shows that all the higher orders are negligible. Otherwise, interactions exist in the model, and further calculations are needed.…”

Section: Sobol's Indices Definitionmentioning

confidence: 99%

“…It mostly deals with suspensions analysis under uncertain characteristics and loading [11,12]. One Icelandic study [13,14] covers the wind-related accident issue with reliability analysis, but no warning system has been envisaged.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic assessment of roadway departure risk in a curve

Rey¹,

Clair²,

Fogli³

et al. 2011

Vehicle System Dynamics

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Roadway departure while cornering constitutes a major part of car accidents and casualties in France. Even though drastic policy about overspeeding contributes to reduce accidents, there obviously exist other factors. This article presents the construction of a probabilistic strategy for the roadway departure risk assessment.A specific vehicle dynamic model is developed in which some parameters are modelled by random variables. These parameters are deduced from a sensitivity analysis to ensure an efficient representation of the inherent uncertainties of the system. Then, structural reliability methods are employed to assess the roadway departure risk in function of the initial conditions measured at the entrance of the curve. This study is conducted within the French national road safety project SARI that aims to implement a warning systems alerting the driver in case of dangerous situation.

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Probabilistic assessment of road vehicle safety in windy environments

Cited by 67 publications

References 17 publications

Effects of wind barrier on the safety of vehicles driven on bridges

Effects of wind barrier on the safety of vehicles driven on bridges

Reliability-Based Vehicle Safety Assessment and Design Optimization of Roadway Radius and Speed Limit in Windy Environments

Probabilistic assessment of roadway departure risk in a curve

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