Experimental Study on the Relationship between Fatigue and Unsafe Behavior of Urban Rail Transit Drivers

2021 ◽  
pp. 036119812110148
Author(s):  
Xing-da You ◽  
Lin Zhu ◽  
Zhi-gang Liu ◽  
Yuan-chun Huang
Keyword(s):  
Normal State ◽  
Rapid Development ◽  
Urban Rail Transit ◽  
Rail Transit ◽  
Urban Rail ◽  
Potential Safety ◽  
Unsafe Behavior ◽  
Train Driver ◽  
Time Required ◽  
The Relationship

In recent years there has been rapid development of urban rail transit in China. The train driver, as the direct controller of the train, plays an important role in subway operation, and their driving performance directly determines whether the train is safe or not. To explore the relationship between fatigue and unsafe behavior, a simulated driving experiment was designed to record the train driver’s behavior under fatigue and normal state. The changes of operation accuracy and timeliness are used in combination to reflect the train driver’s unsafe behavior. The results show that when the train driver is in a state of fatigue, their operation accuracy is 126% lower than in the normal state. In the operation timeliness index, the time required for the train driver to react and complete the action is 28.13% and 17.7% longer than that in the normal state. It is concluded that fatigued driving can easily lead to unsafe behavior which then leads to potential safety accidents.

Scientific Location between Rail Transit and Bus in China

2011 ◽  
Vol 378-379 ◽  
pp. 274-277
Author(s):  
Yu Ping Wang ◽  
Li Zhao ◽  
Chao Qun Ma ◽  
Yan Yong Guo
Keyword(s):  
Urban Rail Transit ◽  
Rail Transit ◽  
Transit Planning ◽  
Urban Rail ◽  
Competition Result ◽  
The Relationship

With the rising of urban rail transit planning and constructing in China, the relationship between rail transit and bus must be located. After analyzed the inevitability of competition and the necessity of cooperation between rail transit and bus, this paper strategically located the relationship between rail transit and bus. At last, based on the characteristic of competition between rail transit and bus, this paper brought forward specific measures of staggering competition with cooperation corresponding to different rail transit develop stage to implement rail transit and bus. Higher level competition will be formed, and the competition result is not “single win” but “both win”.

Design for Urban Rail Transit Energy Efficiency Management System

2013 ◽  
Vol 749 ◽  
pp. 629-633
Author(s):  
Jian Bin Ye ◽  
Zhi Yan Ding ◽  
Qi Zhu
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Management System ◽  
Rapid Development ◽  
Chinese Economy ◽  
Urban Rail Transit ◽  
Rail Transit ◽  
Service Architecture ◽  
Urban Rail ◽  
Emission Reduction Strategies

With the rapid development of Chinese economy and the speeding up urbanization, urban rail transit has entered a rapid development period, which results in more and more energy consumption. Meanwhile affected by energy source and environment factors, the state has implemented energy-saving emission reduction strategies in various fields, so energy efficient management for urban rail transit becomes more important. Based on the analysis of energy consumption problems in urban rail transit, the paper designs urban rail transit energy efficiency management system from the aspects of overall architecture, service architecture and application function, and provides technical support for the realization of the software system.

Adaptive Spectrum Management of Cognitive Radio in Intelligent Transportation System

2015 ◽  
Vol 743 ◽  
pp. 765-773 ◽  
Author(s):  
Cheng Wu ◽  
Y.M. Wang ◽  
Xiang Qiang ◽  
Z.Y. Zhang
Keyword(s):  
Cognitive Radio ◽  
Ad Hoc ◽  
Intelligent Transportation System ◽  
Environmental Changes ◽  
Rapid Development ◽  
Spectrum Management ◽  
Urban Rail Transit ◽  
Rail Transit ◽  
Value Functions ◽  
Urban Rail

With the rapid development of urban rail transit, the demand of the public in rail transportationto take real-time, reliable and efficient wireless access services, has become the focus of mobilebroadband communications. Wireless cognitive radio (CR) over urban rail transit is a newly emergingparadigm that attempts to opportunistically transmit in licensed frequencies, without affecting the preassignedusers of these bands. To enable this functionality, such a radio must predict its operationalparameters, such as transmit power and spectrum. These tasks, collectively called spectrum management,is difficult to achieve in a dynamic distributed environment, in which CR users may only takelocal decisions, and react to the environmental changes. In this paper, we propose a reinforcementlearning based approach for spectrum management. Our approach uses value functions to evaluate thedesirability of choosing different transmission parameters, and enables efficient assignment of spectrumsand transmit powers by maximizing long-term reward. We then investigate various real-worldscenarios, and compare the communication performance using different sets of learning parameters.The results proves our reinforcement learning based spectrum management can significantly reduceinterference to licensed users, while maintaining a high probability of successful transmissions in acognitive radio ad hoc network.

Research of Urban Rail Transit Vehicle Aluminum Alloy Bolster FSW Welding Technology Based on Thermal-Mechanical Coupling

2018 ◽  
Vol 773 ◽  
pp. 208-213 ◽  
Author(s):  
Ying Shi Sun
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Rapid Development ◽  
Engineering Application ◽  
Urban Rail Transit ◽  
Rail Transit ◽  
Mechanical Coupling ◽  
Friction Stir ◽  
Welding Technology ◽  
Urban Rail

With the rapid development of urban rail transit and the increasing level of research and development, aluminum alloy materials feature excellent physical and mechanical properties, and thus an urban rail transit vehicle adopts aluminum alloy materials. Friction Stir Welding (FSW) technology is adopted in the production process of a bolster in this article and research of stress strain of friction stir welding parts plays an important role for engineering application of friction stir welding technology.

Design and Implementation of Mobile Client for Passenger Dynamic Travel Information Enquiry in Urban Rail Transit Network

2014 ◽  
Vol 571-572 ◽  
pp. 502-506
Author(s):  
Qin Luo ◽  
Guan Di Ye ◽  
Jia Zhi Yang ◽  
Yi Kui Mo
Keyword(s):  
Rapid Development ◽  
Smart Phone ◽  
Mobile Internet ◽  
Urban Rail Transit ◽  
Rail Transit ◽  
Mobile Client ◽  
Travel Choice ◽  
Travel Information ◽  
Client Software ◽  
Urban Rail

With rapid development and popularity of smart phone and mobile internet, mobile client software (APP) is widely used in every aspect of daily life. To improve the informatization and intellectualization of Urban Rail Transit passenger services, the paper brings forward a method of optimal travel choice for passengers based on “dynamic travel time”(hereinafter to be referred as DTT), and also takes advantage of the Android platform to develop an APP for dynamic travel information enquiry. The structure of the APP and the key problems to be resolved during the development process are introduced. As the APP is applied into practice, it can provide passengers with effective support.

Urban Rail Transit Types and Single Wire on the Propagation Law of Delays

2016 ◽  
Vol 835 ◽  
pp. 763-766
Author(s):  
Dong Xue Zhang ◽  
Yan Hui Wang ◽  
Ya Fei Wang
Keyword(s):  
Rapid Development ◽  
Recursive Formula ◽  
Urban Rail Transit ◽  
Living Standard ◽  
Rail Transit ◽  
Urban Rail ◽  
Propagation Law ◽  
Politics And Culture ◽  
Several Delays

Along with our country, a steady and rapid development of economy, politics and culture, the traffic also got rapid development with the trend. The improvement of people's living standard in our country, more and more frequent transportation also emerged, the requirement for the quality of travel people also put forward higher requirements; Therefore, as a responsible for the daily commuter traffic tools, urban rail transit train delay problem should give our attention. The types of urban rail traffic delay is described in this paper, including the initial delay and joint and several delays, and expounds the time characteristics and spatial characteristics of delays, and the urban rail transit delays was studied, on the single line shows the single delays the transmission of the recursive formula, for the delay of the urban rail transit emergency disposal provides theory basis.

scholarly journals An Innovative Approach to Determining High-Risk Nodes in a Complex Urban Rail Transit Station: A Perspective of Promoting Urban Sustainability

2018 ◽  
Vol 10 (7) ◽  
pp. 2456 ◽  
Author(s):  
Hui Xu ◽  
Liudan Jiao ◽  
Shulin Chen ◽  
Milan Deng ◽  
Ningxin Shen
Keyword(s):  
High Risk ◽  
Public Transportation ◽  
Public Safety ◽  
Rapid Development ◽  
Urban Sustainability ◽  
Urban Rail Transit ◽  
Innovative Approach ◽  
Rail Transit ◽  
Urban Rail ◽  
Transit Station

Public safety presents high importance in urban sustainable development. Transportation safety is a significant section in public safety. Over the last couple of decades, as a sustainable means of public transportation, urban rail transit presents a rapid development in China. Increasing initiatives and practices have been engaged with views to facilitating people’s travel and intensive utilizing land resources. Echoing this, rail transit stations with multi-floor structure have been built and show structure complexity. Due to this complexity, there is a need to focus on risk management for the stations to guarantee operation safety. Accordingly, this research introduces an innovative approach to identify high-risk nodes in the complex rail transit stations. The high-risk nodes are determined according to two aspects, which are the key nodes of the station and presenting large passenger volumes. Complex network analysis and field investigation were adopted in this study. The Lianglukou rail transit station in Chongqing, China was selected for case study. The research results in this study indicate that (1) in platform floors, stairs/escalators are almost high-risk nodes; (2) columns and metal fences that have been determined as high-risk nodes are located near stairs/escalators; (3) in concourse floor, the determined high-risk nodes present relative high degree centrality and low betweenness centrality compared with nodes in platform floor. The obtained high-risk nodes are helpful for the management firms to develop risk mitigation measures and re-allocate their resources to create a safe environment for passengers in the stations. The guarantee for the rail transit station operation safety plays an important role in enhancing urban sustainability.

scholarly journals A Resilience-Based Security Assessment Approach for CBTC Systems

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Ruiming Lu ◽  
Huiyu Dong ◽  
Hongwei Wang ◽  
Dongliang Cui ◽  
Li Zhu ◽  
...  
Keyword(s):  
Rapid Development ◽  
Urban Rail Transit ◽  
Economic Losses ◽  
Rail Transit ◽  
Security Level ◽  
Continuous Exposure ◽  
Efficient Operation ◽  
Train Control ◽  
Urban Rail ◽  
Assessment Approach

With the rapid development of urban rail transit systems, large amounts of information technologies are applied to increase efficiency of train control systems, such as general computers, communication protocols, and operation systems. With the continuous exposure of information technology vulnerabilities, security risks are increasing, and information is easy to use by malicious attackers, which can bring huge property and economic losses. The communication-based train control (CBTC) system is the most important subsystem of urban rail transit. The CBTC system ensures safe and efficient operation of trains, so the quantitative assessment of cyber security is quite necessary. In this paper, a resilience-based assessment method is proposed to analyze the security level of CBTC systems based on indicators of both the cyber domain and the physical domain. The proposed method can demonstrate the robustness and recovery ability of CBTC systems under different security attacks. Based on the structural information entropy, the fusion of different indicators is achieved. Two typical attacking scenarios are analyzed, and the simulation results illustrate the effectiveness of the proposed assessment approach.

scholarly journals GROUND SUBSIDENCE ALONG SHANGHAI METRO LINE 6 BY PS-InSAR METHOD

2018 ◽  
Vol XLII-3 ◽  
pp. 1889-1893 ◽  
Author(s):  
J. Wu ◽  
M. Liao ◽  
N. Li
Keyword(s):  
Ground Deformation ◽  
Rapid Development ◽  
Vertical Direction ◽  
Urban Rail Transit ◽  
Displacement Rate ◽  
Rail Transit ◽  
Maximum Displacement ◽  
Envisat Asar ◽  
Urban Rail ◽  
Shanghai Metro

With the rapid development of urban economy, convenient, safe, and efficient urban rail transit has become the preferred method for people to travel. In order to ensure the safety and sustainable development of urban rail transit, the PS-InSAR technology with millimeter deformation measurement accuracy has been widely applied to monitor the deformation of urban rail transit. In this paper, 32 scenes of COSMO-SkyMed descending images and 23 scenes of Envisat ASAR images covering the Shanghai Metro Line 6 acquired from 2008 to 2010 are used to estimate the average deformation rate along line-of-sight (LOS) direction by PS-InSAR method. The experimental results show that there are two main subsidence areas along the Shanghai Metro Line 6, which are located between Wuzhou Avenue Station to Wulian Road Station and West Gaoke Road Station to Gaoqing Road Station. Between Wuzhou Avenue Station and Wulian Road Station, the maximum displacement rate in the vertical direction of COSMO-SkyMed images is −9.92 mm/year, and the maximum displacement rate in the vertical direction of Envisat ASAR images is −8.53 mm/year. From the West Gaoke Road Station to the Gaoqing Road Station, the maximum displacement rate in the vertical direction of COSMO-SkyMed images is −15.53 mm/year, and the maximum displacement rate in the vertical direction of Envisat ASAR images is −17.9 mm/year. The results show that the ground deformation rates obtained by two SAR platforms with different wavelengths, different sensors and different incident angles have good consistence with each other, and also that of spirit leveling.

Reliability analysis of Tianjin urban rail transit network based on complex network evolution characteristics

2020 ◽  
pp. 2150075
Author(s):  
Junwei Zeng ◽  
Yongsheng Qian ◽  
Xiaodi Liu ◽  
Chaoyang Zhang ◽  
Dejie Xu ◽  
...  
Keyword(s):  
Complex Network ◽  
Rapid Development ◽  
Network Evolution ◽  
Urban Rail Transit ◽  
Rail Transit ◽  
Complex Network Theory ◽  
Urban Rail ◽  
Evolution Characteristics ◽  
Urban Rail Transit Network

The rapid development of new urbanization boosts the pace of urban rail transit (URT) network construction. The new-built lines not only facilitate people’s daily travel, but also change the reliability of the original network. In this paper, based on the complex network theory, the static characteristics of Tianjin URT represented by the current and forward networks are analyzed. The global efficiency is selected as the evaluation index to analyze the evolution characteristics of the network. The results show that Zhigu station and Xiawafang station are more vulnerable in the current network, while Zhangxingzhuang station and Jinzhonghe street station are the key stations in the forward network, and need to be paid more attention. Meanwhile, the lines M9 and Z2 as the key lines in the long-term network and their reliability must be ensured.

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