We study the effect of the parking on heterogeneous commuters’ travel choice in a competitive transportation systemwhich consists of a subway and a parallel road with a bottleneck of limited service capacity. Everymorning, commuters either use their private cars only or drive their cars to the bottleneck, park there, and then take the subway to the destination. Considering the effects caused by...

Urban road tunnels provide an increasingly cost-effective engineering solution, especially in compact cities like Singapore. For some urban road tunnels, tunnel characteristics such as tunnel configurations, geometries, provisions of tunnel electrical and mechanical systems, traffic volumes, etc. may vary from one section to another. These urban road tunnels that have characterized nonuniform p...

Evaluation of the interaction between a new and the existing underground structures is one of the important problems in urban tunneling. In this work, using FLAC3D, four numerical models of single- and twin-tube tunnels in urban areas are developed, where the horizontal distance between the single- and twin-tube tunnels are varied. The aim is to analyze the effects of the horizontal dista...

Accurate analysis of electromagnetic wave propagation in tunnels has important applications in the areas of mobile and wireless communications. In this paper a fully vectorial finite element base propagation model is developed for blocked straight and curved tunnels. Effect of different vehicles, location of vehicles and number of vehicles inside tunnels is analysed. It is shown that the basic ...

We consider a class of highly dynamic networks modelled on an urban subway system. We examine the problem of creating a map of such a subway in less than ideal conditions, where the local residents are not enthusiastic about the process and there is a limited ability to communicate amongst the mappers. More precisely, we study the problem of a team of asynchronous computational entities (the ma...

Background Certain occupations are at greater risk of stress and depression than others. In particular, occupations related to too much or too little work, having to make too many decisions, having very little control over decisions, time pressures and deadlines, excessive and inconvenient working hours, highly repetitive work and lack of job variety, the necessity to work fast, job insecurity ...

Drawing on an ethnographic study of the installation and maintenance of Paris subway wayfinding system, this article attempts to discuss and specify previous claims that highlight stability and immutability as crucial aspects of material ordering processes. Though in designersʼ productions (guidelines, graphic manuals...), subway signs have been standardized and their consistency has been inves...

Inside air ventilation ducts of the confined space such as subway stations become contaminated by various contaminants and particular matters after long time operation. The accumulated various pollutants at inner duct surface easily transport and cause secondary air contamination and injure subway passengers’ respiratory system and health. In fact, only periodic duct cleaning works can improve ...

This study use noise and vibration analytical system to test and analyze the noise and vibration of subway station hall, draw the conclusion: analysis the noise test results when the vehicles through the subway station hall. The noise rises as the frequency increases, gets the peak value nearby 5000 Hz, the high of test point gives lesser influence to noise contribution. The vibration occurred ...

In the subway station fires, the most immediate threat to passengers’ life is not the direct exposure to fire, but the smoke inhalation because it contains hot air and toxic gases. Theoretical analysis and CFD simulations are applied to analyze the various possible ventilation model and obtain the optimization of ventilation mode in the subway station fires. According to the structure character...