a r t i c l e i n f o Using cross-national comparative analysis, this paper discusses the reasons why France has succeeded in partially privatizing its most recently constructed high speed line, while the U.S. has not reached this stage. The authors argue that France, with an interventionist government, diverged from the U.S. during the Great Depression by nationalizing its private railways and...

The characteristic of fast movement in high-speed rail seriously affects the stability of vehicular wireless communication. Applying cognitive technology to individual users often brings frequent channel switch and inefficient blind learning. To address these issues this paper proposes a novel concept of Cognitive Base Station (CBS), which has the capability of forecasting spectrum holes and as...

The mitigation of traffic congestion is a growing problem globally. We test whether there is a relationship between rail provision and road performance in Japan, using aggregate level data. Our motivation for examining Japan is the comparatively high level of rail provision in Japan. A regression analysis of prefectural data from 2010 finds that the length of rail has a significant effect on av...

This paper, presents a novel idea for analog current comparison which compares input signal current and reference currents with high speed, low power and well controlled hysteresis. Proposed circuit is based on current mirror and voltage latching techniques which produces rail to rail output voltage as a result of current comparison. The same design can be extended to a simple current comparato...

The leakage resistance of rail to earth is an important parameter of electrified railways, and it directly affects the characteristics of traction return current and railway signal track circuit. High speed railways mainly adopt the ballastless track in China, whose rail leakage resistance is very different compared to the resistance in the ordinary railway ballast track condition, usually has ...

The rail fastening system is an important part of a high-speed railway track. It is always critical to the operational safety and comfort of railway vehicles. Therefore, the condition detection of the rail fastening system, looseness or absence, is an important task in railway maintenance. However, the vision-based method cannot identify the severity of rail fastener looseness. In this paper, t...

the evaluation and control of the trains induced vibrations needs even more attention in the case of underground tracks which passes near to monuments and historical sites. the rail corrugations which occur due to the wheels’ impulse loads during the operation period of underground railway tracks, usually amplify the ground borne noise and vibration. in the current study, the mentioned phenomen...

the vibration of cable-stayed bridges subjected to the passage of high-speed trains is studied in this article. the moving train includes a number of wagons, each of which is modeled as a four-axle system possessing 48 degrees of freedom. the car model is nonlinear and three-dimensional and includes nonlinear springs and dampers of primary and secondary suspensions, dry friction between differe...

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