A bimodal transit system for large cities: cost efficiency and environment friendliness

Author(s):  
Sida Luo ◽  
Liujiang Kang
2019 ◽  
Vol 11 (13) ◽  
pp. 3555 ◽  
Author(s):  
Di Yao ◽  
Liqun Xu ◽  
Jinpei Li

This paper presents a super efficiency network Data Envelopment Analysis (SE-NDEA) model for eleven cities in China. The model focuses on measuring the performance of public transit system by integrating multiple stakeholders involved in public transit system with the exogenous environment in where they operated. Thus, local authority, bus operators, passengers, uncontrollable environmental factors, and the externality of public transit are all taken into account in the measurement framework. They are interrelated inputs and outputs. The measurement framework can simultaneously capture each public transit system’s production efficiency, service effectiveness, and operational effectiveness. Meanwhile, undesirable outputs, uncontrollable factors, and boundary-valued variables are considered. The paper evaluates the performance of public transit system of 11 Chinese cities from 2009 to 2016. The results reveal that the exogenous environment has a marked impact on the performance measurement of public transit system. Super cities tend to perform better than mega cities, and mega cities tend to perform better than large cities. Furthermore, service effectiveness has a significantly positive correlation with production efficiency, and transit rail tends to perform better than the conventional bus. These findings have an important implication for China’s bus priority implement and more general managerial insights for public transit development.


2018 ◽  
Vol 3 (1) ◽  
pp. 157
Author(s):  
Siam Yamsaengsung ◽  
Borworn Papasratorn

Traffic congestion is a serious issue for large cities.  This is especially critical for cities that has insufficient mass transit system like Bangkok.  Although transportation infrastructure projects and rail mass transit lines are being implemented, these efforts require major financial investment and take a long time to complete.  This work proposes to help reduce traffic problems through influencing a change in driver behavior.  In this initial stage, a model for an intelligent persuasive driver assistant is conceptualized as a voice-interactive smart assistant on a smartphone.  The system uses information about the driver, his physical state, vehicle performance information, and geolocation information to form persuasive strategies to influence driver behavior and to adapt user interfaces and interactions to reduce driver distraction.  Integrating these components together is expected to provide improved assistance in driving tasks and affect driving behavior changes. Keywords: intelligent driver assistant, navigation, smart assistant, persuasive technology


2020 ◽  
Vol 54 (6) ◽  
pp. 1775-1791
Author(s):  
Nazila Aghayi ◽  
Samira Salehpour

The concept of cost efficiency has become tremendously popular in data envelopment analysis (DEA) as it serves to assess a decision-making unit (DMU) in terms of producing minimum-cost outputs. A large variety of precise and imprecise models have been put forward to measure cost efficiency for the DMUs which have a role in constructing the production possibility set; yet, there’s not an extensive literature on the cost efficiency (CE) measurement for sample DMUs (SDMUs). In an effort to remedy the shortcomings of current models, herein is introduced a generalized cost efficiency model that is capable of operating in a fuzzy environment-involving different types of fuzzy numbers-while preserving the Farrell’s decomposition of cost efficiency. Moreover, to the best of our knowledge, the present paper is the first to measure cost efficiency by using vectors. Ultimately, a useful example is provided to confirm the applicability of the proposed methods.


2018 ◽  
Vol 24 (1) ◽  
Author(s):  
V. S. CHAUHAN ◽  
BHANUMATI SINGH ◽  
SHREE GANESH ◽  
JAMSHED ZAIDI

Studies on air pollution in large cities of India showed that ambient air pollution concentrations are at such levels where serious health effects are possible. This paper presents overview on the status of air quality index (AQI) of Jhansi city by using multivariate statistical techniques. This base line data can help governmental and non-governmental organizations for the management of air pollution.


Author(s):  
Alexander Martynyuk

The article is devoted to questions of the administrative-territorial reform in Ukraine, namely: the benefits and risks of creating a capable, united territorial community based on large cities. Authoroffers a reliable means for the formation of capable united territorial communities through the process of integration with economically developed centers – cities of oblast significance.


1976 ◽  
Vol 24 (2) ◽  
pp. 271-281
Author(s):  
Robert J. Havighurst

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