نتایج جستجو برای: Rollover Stability

تعداد نتایج: 300735  

2003
Seth Rogers Wenbing Zhang

Truck accidents involving rollover have extremely high fatality rates. About half of all truck drivers killed in accidents last year were involved in a rollover. Freightliner’s Rollover Stability Advisor alerts drivers to potential rollover situations, training them to avoid excessive rollover risk. In this paper, we describe work that extends the Rollover Stability Advisor to predict rollover ...

2005
Hai Yu Ümit Özgüner

The safety of road vehicles depends on the yaw-roll dynamics. A loss of roll stability results in a rollover accident. Mechanisms to warn against rollover threat and a rollover avoidance control methodology are crucial in designing a successful active safety warning/control system for heavy-duty commercial vehicles. A dynamic rollover metric, Time-To-Rollover (TTR), has become popular in rollov...

2008
Jangyeol Yoon Wanki Cho Kyongsu Yi

This paper describes an unified chassis control (UCC) strategy to prevent vehicle rollover and improve maneuverability. In order to detect a danger of rollover, rollover index (RI) which indicates an impending rollover is determined. The rollover index is calculated using estimated roll angle, roll rate and measured lateral acceleration. Lateral and vertical model-based roll state estimators ar...

Boluhari , S.M. , Darvish-Damavandi , A., Masih-Tehrani , M., Otadi, A. ,

In this paper, a three-axle bus rollover threshold and the effective parameters are studied. The rollover threshold is a speed that automotive is passing without occurring rollover. The objective is a determination of the heavy vehicle rollover critical speed while turning. For this purpose, a three-axle bus is studied. The dynamic equations related to rollover is extracted, and then rollover c...

Journal: :American journal of public health 1989
L S Robertson

The risk of fatal rollover of utility vehicles per 100,000 registered vehicles relative to cars during 1982-87 was strongly correlated to the static stability of the vehicles. Distance between the center of the tires divided by twice the height of center of gravity explained 62 per cent of the variation in fatal rollover rates where rollover was the first harmful event. Statistical controls for...

E. Esmailzadeh, H. R. Bahrampuri and N. Niksefat,

Articulated liquid cargo vehicles transporting inflammable fuels and dangerous chemical products require special consideration when traveling on urban roads or cruising at highway speeds. The road safety and handling of these kinds of vehicles may be adversely affected when negotiating sharp turns or travelling on slippery roads, which may result in either lateral instabilities or complete roll...

2014
Shuwen Zhou Siqi Zhang

The rollover accidents in the tractor semi-trailer are often fatal and many factors could cause the tractor semitrailer rollover. In this paper, a rollover prevention control method was proposed based on real-time calculation of rollover index. The vehicle Center of Gravity CG height from the ground is an important parameter in the rollover index and it is estimated through lateral acceleration...

2009
Steven C. Peters Karl Iagnemma K. Iagnemma

Vehicle rollover represents a significant percentage of single-vehicle accidents and accounts for over 9000 fatalities and over 200,000 non-fatal injuries each year. Previous research has yielded rollover stability control systems that are effective in on-road conditions.Accident statistics show, however, that over 90% of rollovers involve road departure, during which a vehicle may encounter sl...

2004
Ellen S. Hertz

Rollover risk for passenger vehicles is studied using data from six states. The metric that is used is the number of rollovers per single vehicle accident. The analysis is performed with logistic regression and relevant factors such as weather and driver age are controlled for in the model. The use of categorical analysis permits the data to be used on the observation level, preventing the loss...

E. Esmailzadeh, H. R. Bahrampuri and N. Niksefat,

Articulated liquid cargo vehicles transporting inflammable fuels and dangerous chemical products require special consideration when traveling on urban roads or cruising at highway speeds. The road safety and handling of these kinds of vehicles may be adversely affected when negotiating sharp turns or travelling on slippery roads, which may result in either lateral instabilities or complete roll...

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