A Monte Carlo train over-speed derailment model for risk assessment is developed based on the derailment coefficient (wheel lateral and vertical force ratio). The model considers a one lump train negotiating on curved tracks or tangent tracks. The derailment coefficients for these two situations are calculated and the probabilities of train derailment are obtained to enhance a large scale Monte...

The train derailment is one of the major accidents in rail transit safety system. The reach uses collision accident of rail transit train in Tokyo and Shanghai as the case. Firstly, it present fishbone diagram to qualitatively analysis main factors in derailment. Then it set up a derailment accident tree model with the qualitative and quantitative analysis of. The results show that illegal oper...

Derailments are the most common type of train accident in the United States. They cause damage to infrastructure, rolling stock and lading, disrupt service, and have the potential to cause casualties, and harm the environment. Train safety and risk analysis relies on accurate assessment of derailment likelihood. Derailment rate - the number of derailments normalized by traffic exposure - is a u...

Derailments are the most common type of freight-train accidents in the United States. Derailments cause damage to infrastructure and rolling stock, disrupt services, and may cause casualties and harm the environment. Accordingly, derailment analysis and prevention has long been a high priority in the rail industry and government. Despite the low probability of a train derailment, the potential ...

We conducted statistical analyses and used modeling techniques to develop derailment probabilities for freight trains and freight cars operating on North American railroads. Knowing the expected frequency of derailment and the conditional probabilities of derailment for individual cars enables estimation of the derailment risk as it is affected by train length, operating speed, and positioning ...

E. Caurier, ∗ G. Mart́ınez-Pinedo, 3, † F. Nowacki, ‡ A. Poves, § and A. P. Zuker ¶ Institut de Recherches Subatomiques, IN2P3-CNRS, Université Louis Pasteur, F-67037 Strasbourg, France Institut d’Estudis Espacials de Catalunya, Edifici Nexus, Gran Capità 2, E-08034 Barcelona, Spain Institució Catalana de Recerca i Estudis Avançats, Llúıs Companys 23, E-08010 Barcelona, Spain Departamento de F́ıs...

In the event of a collision between a traveling, high speed train and a vehicle, the scale of human fatality and property damage can increase substantially if the train derails from its track after impact. Hence, it is important to identify the conditions and factors that may potentially lead to derailment in the event of a train-vehicle collision incident at a highway rail grade crossing. This...

Transportation Research Record: Journal of the Transportation Research Board, No. 2261, Transportation Research Board of the National Academies, Washington, D.C., 2011, pp. 178–185. DOI: 10.3141/2261-21 structure and operational conditions. Track-related and equipmentrelated accident causes collectively result in the majority of train derailments in the United States. Understanding how they may...

The current methodology for prioritizing level crossing (LC) warning system upgrades and elimination in the United States (U.S.) focuses on the likelihood of collisions between highway and rail vehicles as well as highway user fatalities. However, these metrics do not encompass all LC risks. In particular, they do not consider the risk of derailment that LCs pose to trains, crews, and cargo (es...