A research into congestion propagation mechanism of urban rail transit passenger flow in train delay scenario is great significance to the formulation coordinated limitation measures among operation lines networks. This paper presents a methodology for modelling cascade dynamics congestion. In this method, firstly, computing method network states based on load entropy proposed describe overall ...

The Saint Petersburg Metro was opened on 15 November 1955. It is the second largest subway in Russia after Moscow Metro. St. has stagnated since early 2000s. This causes many problems for transport network, such as high congestion of surface transport, especially new areas city where there no underground line. Also, misallocation traffic, small number regular and interchange stations per multi-...

Emerging high-speed metropolitan Ethernets create new opportunities to save costs when converging data and telephony services. However, connecting GSM and UMTS base stations over metropolitan Ethernets require these networks to meet stringent QoS requirements in the presence of bursty data traffic. To investigate this problem, we have probed ETH’s campus network, which spans the metropolitan ar...

Every day thousands of individuals in the greater DC area use the WMATA Metro system to get from place to place. The Metro has collected a lot of information on riders including when and where they pass through turnstiles. In “the spirit of open data and collaboration,” the Metro has released data on stationto-station rider counts (1). The release was an open invitation for the public to analyz...

What if {a tourist, a train addict, Dr. Sheldon Cooper, somebody who likes to waste time} wants to visit all metro lines or carriages in a given network in a minimum number of steps? We study this problem with an application to the Parisian metro network and propose optimal solutions thanks to mathematical programming tools. Quite surprisingly, it appears that you can visit all 16 Parisian metr...

In this study, the engineering background of No. 2 complex connecting passage Binhu Road Station/Jinhu Square Station Nanning Metro Line 3 is investigated, where artificial ground freezing technique adopted. A three-dimensional finite element model established to investigate temperature development frozen soil curtain, with a simulation dynamic evolution frosted curtain. The validated by compar...

Direct current (DC) traction power systems are widely used in metro transport systems, with running rails usually being used as return conductors. When traction current flows through the running rails, a potential voltage known as “rail potential” is generated between the rails and ground. Currently, abnormal rises of rail potential exist in many railway lines during the operation of railway sy...

In this paper we investigate the problem of drawing metro maps which is defined as follows. Given a planar graph G of maximum degree 8 with its embedding and vertex locations (e.g. the physical location of the tracks and stations of a metro system) and a set L of paths or cycles in G (e.g. metro lines), draw G and L nicely. We first specify the niceness of a drawing by listing a number of hard ...

The metro door system is one of the high failure rate subsystems of metro trains. The Failure Mode, Effects and Criticality Analysis (FMECA) method is applied to analyze the reliability of metro door system in this paper. Firstly, failure components of the door are statistically analyzed, and the major failure components are determined. Secondly, failures are classified according to their impac...