scholarly journals The Viscosity Effect on Velocity of a Macroscopic Vehicular Traffic Model

2021 ◽  
Vol 23 (2) ◽  
pp. A80-A93
Author(s):  
Erick Javier Lopez-Sanchez ◽  
Norma Yanet Sanchez-Torres ◽  
Patricia Eugenia Olivera Martinez
Keyword(s):  
Mexico City ◽  
Urban Transport ◽  
Macroscopic Model ◽  
Vehicular Traffic ◽  
Urban Mobility ◽  
Transport Time ◽  
Viscous Term ◽  
The Public ◽  
Viscosity Effect ◽  
Vehicle Density

Traffic in Mexico City poses a serious problem of vehicle saturation that causes a decrease in speed and increased transport time in the streets that suffer mobility collapses. A macroscopic model of vehicular traffic is used to show the effect of viscosity on the vehicular variables (speed and vehicle density), applied to two avenues in Mexico City, is studied. The input parameters were calculated following the Greenberg model. As the original model presents numerical divergences, the two assumptions corresponding to conservation of the vehicle’s mass and the viscous term are modified. The results suggest that the viscosity depends on time and that it can be adapted to recommend modifications in urban mobility parameters, or even to implement the public planning policies in construction of infrastructure for urban transport, to make vehicle flow more efficient.

scholarly journals Bangkok’s Bumpy Road to Sustainable Urban Mobility: Governance Challenges in the Promotion of Cycle-friendliness

2021 ◽  
Vol 20 ◽  
pp. 106
Author(s):  
Tanapon Panthasen ◽  
Bart Lambregts ◽  
Supaporn Kaewko Leopairojana
Keyword(s):  
Behavioural Change ◽  
Urban Transport ◽  
Urban Mobility ◽  
Key Factors ◽  
Scarce Resources ◽  
The Public ◽  
Governance Challenges ◽  
Sustainable Urban Mobility ◽  
Physical Output ◽  
Partial Success

Many cities promote cycling as an environmentally friendly and healthier mode of urban transport. The challenge often is bigger than anticipated, as it involves inducing behavioural change among different groups of actors and reaching agreement about the reallocation of scarce resources. Recent experiences in Bangkok are illustrative. Here, multi-year efforts by the Bangkok Metropolitan Administration (BMA) to promote cycling have yielded only partial success. Recreational cycling has increased, but utility cycling much less so. A gap remains between what the BMA delivers in terms of pro-cycling policies and what Bangkokians need in order to become utility cyclists. This paper investigates the characteristics of this gap and the factors that produce it. It finds that safety concerns in particular keep Bangkokians from cycling, and that organizational inefficiencies and failure to commit key actors, a narrow focus on physical output, wavering political leadership, and a failure to benefit from the knowledge available among members of the public, are key factors preventing the BMA from delivering more effective solutions. The paper concludes by deriving key lessons from the Bangkok experience.

scholarly journals Sustainable urban mobility analysis for elderly and disabled people in São Paulo

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Gislaine A. Azevedo ◽  
Renelson R. Sampaio ◽  
Aloisio S. Nascimento Filho ◽  
Marcelo A. Moret ◽  
Thiago B. Murari
Keyword(s):  
People With Disabilities ◽  
The Elderly ◽  
Sao Paulo ◽  
Urban Transport ◽  
São Paulo ◽  
Urban Mobility ◽  
The Public ◽  
Public Transport System ◽  
Sustainable Urban Mobility ◽  
The Impact

AbstractThe Brazilian Urban Mobility Policy integrates urban transport with traffic planning, establishing appropriate public policies that indicate the need for a safe and accessible public transport system. The major challenge is the inclusion of the elderly and people with disabilities. In this paper, we quantify the impact of rainfall on the number of people with disabilities and elderly people who use the public bus transportation system for accessibility in the first and last miles in the city of São Paulo. The proposed methodology is used to evaluate the co-movements between the time series of free-fare users and rainfall in São Paulo. The findings confirm the hypothesis that significant rainfall causes a reduction in the number of daily free-fare passengers who use the public bus system in São Paulo.

scholarly journals Assessment Urban Transport Service and Pythagorean Fuzzy Sets CODAS Method: A Case of Study of Ciudad Juárez

2020 ◽  
Author(s):  
Luis Perez-Dominguez ◽  
Sara Nohemi Almeraz Duran ◽  
Roberto Romero ◽  
Iván Juan Carlos Pérez-Olguín ◽  
David Luviano-Cruz ◽  
...  
Keyword(s):  
Public Transportation ◽  
Urban Transport ◽  
Ciudad Juarez ◽  
Actual State ◽  
Urban Mobility ◽  
The Public ◽  
Public Transport System ◽  
Comprehensive Method ◽  
Starting Point ◽  
Sustainable Urban Mobility

The purpose of this research article is to provide a comprehensive method that allows the evaluation of the public transportation in their different transport lines that offer in Ciudad Juárez, Chihuahua. This study presents a description of the public transport system as part of the literature review that describes an appropriate model based on the more outstanding publications about urban mobility and public transportation for passengers’ as well as success cases published which serves as a starting point to check the actual state of the public transportation system based on the Pythagorean Fuzzy CODAS to analyze and evaluate the alternatives through criteria that defines the general performance. The integration of these methods provides an adequate methodology for decision-making concerning urban planning and mobility to detect and improve the performance of criteria not considered within sustainable urban mobility plans.

scholarly journals Modernization of the Public Transport Bus Fleet in the Context of Low-Carbon Development in Poland

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3295
Author(s):  
Maciej Dzikuć ◽  
Rafał Miśko ◽  
Szymon Szufa
Keyword(s):  
Coal Combustion ◽  
Electricity Generation ◽  
Urban Transport ◽  
Rolling Stock ◽  
Low Carbon ◽  
The Public ◽  
Low Carbon Development ◽  
Reduce Emissions ◽  
Excessive Noise

The development of urban transport in recent years has become one of the most important issues related to improving the quality of life in Polish cities. Excessive pollution in the form of greenhouse gases and other harmful substances from buses affects people’s health as does the excessive noise. This article analysed the measures being taken to reduce emissions, and the results showed that it is possible to reduce CO2 emissions by more than 28 thousand megagrams (Mg) per annum. Policymakers in Poland should consider limiting electricity generation through coal combustion and recognize, at least temporarily, CNG/LNG-powered buses as low-carbon rolling stock and co-finance their purchase and the necessary infrastructure.

Non-Motorized Transportation Analysis of Traffic Density, Pollution Using Regression Anova Analysis

2021 ◽  
pp. 534-542
Author(s):  
Arjun Rajeevkumar Bhele ◽  
Dr. Sujesh D. Ghodmare
Keyword(s):  
Air Pollution ◽  
Environmental Issues ◽  
Economic Benefits ◽  
Urban Transport ◽  
Traffic Density ◽  
Urban Mobility ◽  
Polluted Atmosphere ◽  
Transportation Modes ◽  
Prolonged Duration ◽  
Motorized Transport

Planners are now trying to provide greener travel solutions to reduce fiscal, social, and environmental issues. This research, therefore, seeks to find significant reasons for urban transport to enhance the use of alternative transportation modes. This report seeks to establish the connection between influential metrics for urban mobility and regular travel trips from different parts of the world. Deployment of excellent non-motorized transport facilities for Walking and cycling is a good way to encourage the use of bicycles, thereby increasing the physical fitness of end-users. Past studies were thoroughly reviewed and found to be applicable for analysis and application in the real world. Anova's regression analysis is distinguished by a more comprehensive interpretation of the findings. At Rajkamal Intersection, Amravati district, Maharashtra the traffic volume counts were carried out. It is the focus of the transport congestion, which leads to a polluted atmosphere due to prolonged duration at the signals. In this research, it can be seen that with the use of Motorized transport the traffic density & air pollution will increase with time, and with the increase in the use of Non-Motorized transport, the traffic density decreases also the air pollution is at a steady pace. The current study shows the necessity, favourable conditions, and economic benefits of non-motorized sustainable traffic, in the Indian condition.

Female lens in urban mobility: technology-use behavior and individual differences

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Marcia Cassitas Hino ◽  
Maria Alexandra Cunha
Keyword(s):  
Individual Differences ◽  
Technology Use ◽  
Gender Segregation ◽  
Individual Characteristics ◽  
Urban Transport ◽  
Urban Mobility ◽  
Adoption Of Technology ◽  
Content Type ◽  
Mobility Service ◽  
Use Behavior

PurposeThe purpose of this study is to investigate how women's individual differences influence urban mobility service technology-use behavior. The reduction in urban mobility is a major problem in countries with emerging economies, thus affecting both the economy and quality of life.Design/methodology/approachThe theoretical approach follows the individual differences theory of gender and information technology (IDTGIT). This research combines structured interviews to understand how the use of urban mobility service technology in daily routines is perceived, questionnaires to map individual differences and user demonstrations to capture how participants used mobility applications on their cell phones.FindingsThis study shows the influence of individual characteristics on the use of mobile apps and presents five behavioral profiles of women. This article goes beyond gender segregation to also show intragender differences.Practical implicationsThis study explains women's behavior regarding urban mobility mobile applications through the generation of five profiles. These profiles can inform public policy managers on urban mobility and provide opportunities for improving the services of companies in the urban transport service chain.Originality/valueWith an intragender perspective, this study identifies the influence of individual characteristics on the use of technology and suggests that contextual identity, a novel dimension of characteristics that influence technology-use behavior, is relevant in the adoption of technology by its users.

scholarly journals Behavioural changes in urban mobility in Barcelona due to the COVID-19 pandemic and its impact on air pollution and greenhouse gas emissions

2021 ◽  
Author(s):  
Corinna Peters
Keyword(s):  
Air Pollution ◽  
Greenhouse Gas ◽  
Public Transport ◽  
Road Traffic ◽  
Ghg Emissions ◽  
Urban Transport ◽  
Policy Implications ◽  
Transport Sector ◽  
Urban Mobility ◽  
The City

This study assesses changes in mobility behaviour in the City of Barcelona due the COVID‐19pandemic and its impact on air pollution and GHG emissions. Urban transport is an important sourceof global greenhouse gas (GHG) emissions. Improving urban mobility patterns is therefore crucial formitigating climate change. This study combines quantitative survey data and official governmentdata with in‐depth interviews with public administration officials of the City. Data illustrates thatBarcelona has experienced an unprecedented reduction in mobility during the lockdown (a 90%drop) and mobility remained at comparatively low levels throughout the year 2020. Most remarkableis the decrease in the use of public transport in 2020 compared to pre‐pandemic levels, whereas roadtraffic has decreased to a lesser extent and cycling surged at times to levels up to 60% higher thanpre‐pandemic levels. These changes in mobility have led to a radical and historic reduction in airpollution, with NO2 and PM10 concentration complying with WHO guidelines in 2020. Reductions inGHG emissions for Barcelona’s transport sector are estimated at almost 250.000 t CO2eq in 2020 (7%of the City’s overall annual emissions). The study derives policy implications aimed at achieving along‐term shift towards climate‐friendlier, low‐emission transport in Barcelona, namely how torecover lost demand in public transport and seize the opportunity that the crisis brings for reform byfurther reducing road traffic and establishing a 'cycling culture' in Barcelona, as already achieved inother European cities.

Urban Mobility and Politics in Mexico City

2016 ◽  
Vol 44 (2) ◽  
pp. 184-204 ◽  
Author(s):  
Oscar Sosa López
Keyword(s):  
Social Movement ◽  
Mexico City ◽  
The State ◽  
Urban Mobility ◽  
Infrastructure Projects ◽  
Toll Road ◽  
The City

Study of the struggle of a social movement, the Frente Amplio contra la Supervía, to stop the construction of an urban toll road in the southwestern end of Mexico City reveals that investments in transportation assumed to benefit the larger public are in fact creating new landscapes of infrastructural and democratic exclusion. Examination of the forms of citizen mobilization, alliances among diverse actors, and the role of accountability institutions as spaces for democratic experimentation suggests that struggles against large infrastructure projects allow citizens and the state to redraw the limits of authoritarianism and the meaning of sustainability and democracy in the city. El movimiento social Frente Amplio contra la Supervía se organizó para detener la construcción de una autopista de peaje urbana en el extremo suroeste de la Ciudad de México. El análisis de las luchas del Frente revela que las inversiones en la transportación que se suponía que beneficiarían a un público amplio en realidad están creando nuevos espacios de exclusión infraestructural y democrática. El análisis de las formas de movilización ciudadana, de las alianzas entre diferentes actores y del rol de las instituciones de rendición de cuentas como espacios de experimentación democrática sugiere que las luchas contra los grandes proyectos de infraestructura les permiten a los ciudadanos y al estado volver a trazar los límites del autoritarismo y el significado de la sostenibilidad y la democracia en la ciudad.

Urban mobility in the Olympic City: a "transportation revolution" in Rio de Janeiro?

TERRITORIO ◽  
2013 ◽  
pp. 40-47
Author(s):  
Rodrigues Juciano Martins
Keyword(s):  
Rio De Janeiro ◽  
Spatial Configuration ◽  
Urban Transport ◽  
Urban Dynamics ◽  
The Public ◽  
Sports Events ◽  
History Of ◽  
Mega Sports Events ◽  
The City ◽  
Vulnerable Population Groups

In the next few years Brazil will receive the largest sum of investment in urban transport in the history of the country for the coming mega sports events. Theoretically, these investments should address the transport crisis that Brazilian cities are experiencing. The paper shows that the issue of transportation is present on the public agenda and in planning connected with mega events in strictly engineering terms. The ‘question of urban transportation' is introduced and a discussion is given of its connection with the preparation of cities for the mega sports events starting with Rio de Janeiro. Here the huge resources involved will probably have deep impacts on urban dynamics and on the socio-spatial configuration of the city without, however, providing solutions to the long standing transportation problems of the more vulnerable population groups.

Fuentes the Young

PMLA ◽  
2013 ◽  
Vol 128 (3) ◽  
pp. 708-710
Author(s):  
John Ochoa
Keyword(s):  
Mexico City ◽  
North Sea ◽  
Public Service ◽  
Carlos Fuentes ◽  
Public Service Announcement ◽  
The Public ◽  
Late Night ◽  
The North ◽  
Pollution Problem ◽  
The North Sea

Carlos Fuentes was a dapper man. His physical bearing, his way of dressing, and his manners were all exquisite. He favored tailored Italian suits, supple loafers, pocket squares. He liked tony international places: he once said he owed the idea for La muerte de Artemio Cruz (1962; The Death of Artemio Cruz), perhaps the most “Mexican” of his novels, “to the North Sea and a beach in Holland” (Interview). But his cosmopolitanism got him into trouble, such as when a well-intentioned but off-key televised public-service announcement resulted in late-night TV parodies. Addressing the pollution problem in Mexico City, Fuentes pleaded for the public to save his “beloved” city—all while standing in an idyllic spot in Cambridge, England.

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