today, transportation of hazardous materials (i.e., hazmat) is a very important issue for researchersdue to the risk of this transit, which should be considered for development of industries and transportation.therefore, a model that is useful should consider the risk and damage to humanitarianand environmental issues due to transit of hazmat materials. by considering the related cost, thereali...

The rail freight carload service segment enables the distribution of freight volumes down to the unit of single rail cars, and stand as an important alternative to road transportation. However, this service segment is often associated with significant uncertainties and variations in daily freight volumes. Such uncertainties are challenging to manage since operating plans generally are establish...

The shapes that networks form are thought to be related to the performance of networks during this process. Using reduced travel time as an evaluation criterion, this study examines growth of road and rail transportation networks to determine the differences in growth patterns that are caused by various factors, including speed on transportation network.

Suppose that there are two congestible modes of travel from A to B — road and rail for concreteness – which are imperfect substitutes in demand. Road congestion from A to B is underpriced; this is an unalterable distortion. Compared to the first best, should the transportation planner choose a wider or narrower road, raise or lower the rail fare, and expand or contract rail capacity? This paper...

public through the National Technical Information Service, Springfield, VA 22161 This document is also available on the FRA Web site at www.fra.dot.gov Final Report July 2001 DOT/FRA/ORD-00/07 U. S. Department of Transportation Research and Special Programs Administration John A. Volpe National Transportation Systems Center Cambridge, MA 02142-1093 Office of Research and Development Washington,...

The non-destructive evaluation of the rail is crucial to provide a high safety level in railway transportation. To detect and classify on line rail surface defects (splitted rail, shelling ...), a specific double-coils double-frequencies eddy current sensor is used, which gives 8 real differential signals. Blind Source Separation (BSS) is applied to dissociate the different classes of defects o...

This article considers all 87 attacks worldwide against air and rail transport systems that killed at least two passengers over the 30-year period of 1982-2011. The data offer strong and statistically significant evidence that successful acts of terror have "gone to ground" in recent years: attacks against aviation were concentrated early in the three decades studied whereas those against rail ...