Using multiple independent networks (also known as rails) is an emerging technique to overcome bandwidth limitations and enhance fault-tolerance of current high-performance clusters. This report presents the limitations and performance of static rail-allocation approaches, where each rail is pre-assigned a direction for communication. An analytical lower bound on the number of networks required...

As state transportation planners seek to build or support sustainable transportation systems in an era of economic challenges, they find few publicly available rail analysis models for stakeholders to examine the environmental impacts, socio-economic effects and costs associated in investing in rail infrastructure. This paper, taken from a University Transportation Center Program (UTCP Region 6...

Rail inspection is a very important task in railway maintenance for traffic safety issues and in preventing dangerous situations. Monitoring railway infrastructure is an important aspect in which the periodical inspection of rail rolling plane is required. Up to the present days the inspection of the railroad is operated manually by trained personnel. A human operator walks along the rail track...

A pricing methodology adapted to specific railroad infrastructures and the trains that use them is one way to ensure that railroad networks used by several different operators are used optimally. The diversity of railway networks (new lines and old lines) and services (long-distance and suburban passenger trains, freight trains, etc.) make it difficult to develop such a pricing methodology. Thi...

In the United States there is an emerging trend to ship goods by rail directly from ports to inland intermodal traffic terminals. However, for this trend to succeed shippers must have “visibility” into rail shipments. In this research we seek to provide visibility into shipments through optimal placement of sensor and communication technology. We formally define the notion of visibility and the...

Railways as a dimension of transportation infrastructure has been widely welcomed in developed and developing industrial countries because of the ability to carry heavy loads over long distances, more safety, less depreciation, less cost, less pollution, etc. Therefore, knowledge of the dynamic behavior of the railway is essential for designers and builders. It is very important to study the vi...

As of today, blockchain technology is virtually absent from rail transit applications, however, it has promising potential. For cloud-based systems or conventional systems, there too much information at the centre, resulting in a high level data processing. However, if processing capability can be provided edge station equipment, greatly reduces operation and maintenance pressure, same time, de...

BACKGROUND To examine demographic characteristics and physical activity (PA) behaviors of trail users on a newly constructed 2-mile urban rail/trail (ie, abandoned rail line converted to a recreational trail). METHODS A systematic evaluation process was initiated to monitor PA behaviors using the System for Observing Play and Recreation in Communities (SOPARC). RESULTS Slightly more males (...

Recent system advances in the rapid transit sector have led to a position where the various modes are trying to look and feel like a mode which they are not buses acting like trams, trams pretending to be metro or even heavy rail (tram-train). There are issues associated with this blurring of boundaries that makes the definition within the existing typology redundant. Added to this there is a p...