scholarly journals Multicriteria Approach to Sustainable Transport Evaluation under Incomplete Knowledge: Electric Bikes Case Study

2019 ◽  
Vol 11 (12) ◽  
pp. 3314 ◽  
Author(s):  
Wojciech Sałabun ◽  
Krzysztof Palczewski ◽  
Jarosław Wątróbski
Keyword(s):  
Urban Areas ◽  
Renewable Energy Sources ◽  
Transportation Systems ◽  
Assessment Model ◽  
Sustainable Transport ◽  
Sustainable City ◽  
Interval Numbers ◽  
Modern Approach ◽  
Incomplete Knowledge ◽  
Pollution Levels

The problem of sustainable city transport is a growing field of study, and will be addressed in this paper. With the rising significance of present transportation systems’ negative externalities on the environment, such as the unavoidable increase of air pollution levels, cities seek sustainable means of transport and reduction of combustion cars’ utilization. Moreover, improvements in the area of renewable energy sources have led to rising trends in sustainability, driving the usage and production of electric vehicles. Currently, there is an increasing tendency of looking for more sustainable transport solutions, especially in highly congested urban areas. It seems that in that case, electric bicycles can be a good option, as they yield more benefits in comparison to cars, especially combustion cars. In this paper, we identify an assessment model for the selection of the best electric bicycle for sustainable city transport by using incomplete knowledge. For this purpose, the Characteristic Objects METhod (COMET) is used. The COMET method, proven effective in the assessment of sustainable challenges, is a modern approach, utterly free of the rank reversal phenomenon. The evaluated model considers investigated multiple criteria and is independent of chosen alternatives in the criteria domain. Hence, it can be easily modified and extended for diverse sets of decisional variants. Moreover, the presented approach allows assessing alternatives under conditions of incomplete knowledge, where some data are presented as possible interval numbers.

scholarly journals Fuel Cell Electric Vehicle as a Power Plant: Techno-Economic Scenario Analysis of a Renewable Integrated Transportation and Energy System for Smart Cities in Two Climates

2019 ◽  
Vol 10 (1) ◽  
pp. 143 ◽  
Author(s):  
Vincent Oldenbroek ◽  
Gilbert Smink ◽  
Tijmen Salet ◽  
Ad J.M. van Wijk
Keyword(s):  
Fuel Cell ◽  
Urban Areas ◽  
Distribution Systems ◽  
Technology Development ◽  
Smart Cities ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Transportation Systems ◽  
Development Scenarios ◽  
Cost Of Energy

Renewable, reliable, and affordable future power, heat, and transportation systems require efficient and versatile energy storage and distribution systems. If solar and wind electricity are the only renewable energy sources, what role can hydrogen and fuel cell electric vehicles (FCEVs) have in providing year-round 100% renewable, reliable, and affordable energy for power, heat, and transportation for smart urban areas in European climates? The designed system for smart urban areas uses hydrogen production and FCEVs through vehicle-to-grid (FCEV2G) for balancing electricity demand and supply. A techno-economic analysis was done for two technology development scenarios and two different European climates. Electricity and hydrogen supply is fully renewable and guaranteed at all times. Combining the output of thousands of grid-connected FCEVs results in large overcapacities being able to balance large deficits. Self-driving, connecting, and free-floating car-sharing fleets could facilitate vehicle scheduling. Extreme peaks in balancing never exceed more than 50% of the available FCEV2G capacity. A simple comparison shows that the cost of energy for an average household in the Mid Century scenario is affordable: 520–770 €/year (without taxes and levies), which is 65% less compared to the present fossil situation. The system levelized costs in the Mid Century scenario are 71–104 €/MWh for electricity and 2.6–3.0 €/kg for hydrogen—and we expect that further cost reductions are possible.

scholarly journals Analysis of Sustainable Transport for Smart Cities

2019 ◽  
Vol 11 (7) ◽  
pp. 2140 ◽  
Author(s):  
Dastan Bamwesigye ◽  
Petra Hlavackova
Keyword(s):  
Urban Areas ◽  
Smart Cities ◽  
Well Being ◽  
Transportation Systems ◽  
Transport Systems ◽  
Sustainable Transport ◽  
Urban Centers ◽  
Modern Cities ◽  
Wide Range

For decades, transportation has been considered as a link to all aspects of life worldwide. In this case, the world’s natural environment, social well-being and economic development all usually depend on transportation systems. In most cases, safe, clean, sustainable and equitable transport systems help countries, especially in cities and urban centers, to thrive. However, a wide range of research shows that transportation systems in most of the cities and urban areas are unsustainable. In fact, some of these transportation systems are considered to be a threat to the environmental, social and economical aspects of future generations. In this perspective, therefore, changing such trends in transportation requires the collaboration of various stakeholders at regional, national and international levels. In this paper, therefore, a wide range of definitions of sustainable transport are discussed. More so, some of the aspects of smart transport for modern cities such as cycling and the role of women in sustainable transport were explored. With the aim of getting to the core of the subject, cases of women in bicycle transport, especially in the Netherlands and Germany compared to Kenya and Uganda are equally elucidated. Although not fully outlined, the idea of smart cities and sustainable transport have heterogeneous characteristics globally as discussed herein.

scholarly journals Smart Car Parking System (SPS) with the Applications of Intelligent Transportation System

2019 ◽  
Vol 9 (2) ◽  
pp. 5159-5162
Keyword(s):  
Intelligent Transportation Systems ◽  
Urban Areas ◽  
Traffic Management ◽  
Intelligent Transportation System ◽  
Intelligent Transportation ◽  
Transportation Systems ◽  
World Population ◽  
Parking Space ◽  
Modern Approach ◽  
Parking System

Intelligent Transportation Systems (ITS) is a modern approach in transportation engineering and management strategies of computer science, electronics and communication as it aims to provide advanced services in various methods of transport and traffic management systems. This helps the users to make safe, smart and efficient transport networks. Intelligent Transportation Systems (ITS) has a very wide application starting from traffic management to driver operation and vehicle control systems. Due to increase in vehicle production and world population leads to demand for more parking spaces and parking facilities. This problem is arising due to gap between demand and supply of parking spaces. The basic focus of this study is how to identify the exact location for parking the vehicle with the help of Arduino IDE software program. It will address the problems effectively associated with identification of parking slots and reaching parking places in urban areas. It informs and guide drivers to find limited number of parking spaces including their price in parking zones with in a shorter duration. Infrared sensors are also used to detect car parking slot occupancy. Smart Parking System (SPS) deals with identification of empty parking space, improper parking of vehicles and show the direction towards vacant parking slots. It also deals with digital payment facility. The ultimate focus of this is to identify the availability or non-availability of parking space.

Urban Meteorology and Climatology

Geography ◽  
2019 ◽  
Author(s):  
Anthony J. Brazel
Keyword(s):  
Urban Areas ◽  
Waste Heat ◽  
Transportation Systems ◽  
Urban Heat Islands ◽  
Metropolitan Region ◽  
Urban Meteorology ◽  
Pollution Levels ◽  
Weather And Climate ◽  
Physically Based ◽  
Selective Bibliography

Urban areas tend to form their own weather and climate that significantly relates to effects of buildings, paved surfaces and materials, the water landscape, and emissions of waste heat and pollution into the atmosphere by industry, transportation systems, and human metabolism. A city gives rise to regional and local urban heat islands, altered river flows, changes in precipitation and humidity, elevated pollution levels, and altered airflow within, over, and across the built landscape. A myriad of microenvironments and microclimates exist across a metropolitan region as a result. These differences are important for a number of reasons, among them the fact that populations are increasingly moving to and living in cities, and the fact that there are several impacts of these changes that affect communities, businesses, urban planning, transportation systems, public health, energy and water use, security, and emergency responses. It is well known that cities have altered the atmosphere, producing changes in air temperature, humidity, precipitation, wind flow, sunshine, and pollution levels. A first formal study is Luke Howard’s The Climate of London. Since the 19th century, several developments led to modern-day practices and applications by urban meteorologists and climatologists. These are outlined in a seminal book Urban Climates and include four periods: (a) prior to 1930, pioneering climatographies of selected cities and weather elements, (b) 1930–1965, growth of micro- and local climatology, (c) 1965–2000, rapid increase in research with links to meteorology and physically based models, and (d) in the 21st century, the maturing of urban meteorology and climatology into a predictive science is occurring. This selective article cites literature on various areas of urban meteorology and climatology. The books, reports, and articles that are listed, with some exceptions, are recent ones. The maturing phase has created an enormous literature from many related disciplines focusing on urban weather and climate. Not every aspect is covered in detail, but books and references will lead to uncovering the vast literature related to this subject. Although it is a selective bibliography, certainly further in-depth searches, it is hoped, can be made by the reader.

scholarly journals Design Consideration Regarding a Residential Renewable-Based Microgrid with EV Charging Station Capabilities

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5085
Author(s):  
Corneliu Marinescu
Keyword(s):  
Urban Areas ◽  
Smart Cities ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
Transportation Systems ◽  
Public Access ◽  
Design Solution ◽  
Charging Infrastructure ◽  
Charging Station ◽  
Building Facades

Electric Vehicles (EVs) will be a key component of sustainable e-transportation systems. It is important to provide a charging infrastructure for EVs. EVs are “zero” polluting and highly efficient, but these qualities are valid only if the EV is supplied from renewable energy sources (RES). In urban areas, there is a lot of unused space such as roofs of residential and enterprise buildings, roofs of parking lots, building facades, etc. In cities, the PV and small wind turbines RES should be able to supply EVs with clean energy. Such a solution has many advantages. In an EU-financed research project, the team developed a solution for a Residential Charging Station (RCS), the design solution being implemented with the equipment available on the market. In this paper, the design considerations and some challenges raised by it are presented. Improvements of the existing equipment to better suit future needs are further discussed. The proposed solution solves the matter optimally and the implementing it will offer future Smart Cities an RCS with public access with several useful properties.

Quality indicator of the smart city transportation and logistics system

2020 ◽  
Vol 19 (11) ◽  
pp. 2116-2135
Author(s):  
G.V. Savin
Keyword(s):  
Intelligent Transportation Systems ◽  
Smart City ◽  
Urban Areas ◽  
Human Life ◽  
Life Quality ◽  
Intelligent Transportation ◽  
Transportation Systems ◽  
Logistics System ◽  
Organization And Management

Subject. The article considers functioning and development of process flows of transportation and logistics system of a smart city. Objectives. The study identifies factors and dependencies of the quality of human life on the organization and management of stream processes. Methods. I perform a comparative analysis of previous studies, taking into account the uniquely designed results, and the econometric analysis. Results. The study builds multiple regression models that are associated with stream processes, highlights interdependent indicators of temporary traffic and pollution that affect the indicator of life quality. However, the identified congestion indicator enables to predict the time spent in traffic jams per year for all participants of stream processes. Conclusions. The introduction of modern intelligent transportation systems as a component of the transportation and logistics system of a smart city does not fully solve the problems of congestion in cities at the current rate of urbanization and motorization. A viable solution is to develop cooperative and autonomous intelligent transportation systems based on the logistics approach. This will ensure control over congestion, the reduction of which will contribute to improving the life quality of people in urban areas.

Smart Cities and Smart Regulation

2018 ◽  
Author(s):  
Anita Rønne
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Fossil Fuels ◽  
System Analysis ◽  
New Technologies ◽  
Smart Cities ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Political Agenda ◽  
Smart Regulation

Increasing focus on sustainable societies and ‘smart cities’ due to emphasis on mitigation of climate change is simultaneous with ‘smart regulation’ reaching the forefront of the political agenda. Consequently, the energy sector and its regulation are undergoing significant innovation and change. Energy innovations include transition from fossil fuels to more renewable energy sources and application of new computer technology, interactively matching production with consumer demand. Smart cities are growing and projects are being initiated for development of urban areas and energy systems. Analysis from ‘Smart Cities Accelerator’, developed under the EU Interreg funding programme that includes Climate-KIC,——provides background for the focus on a smart energy system. Analysis ensures the energy supply systems support the integration of renewables with the need for new technologies and investments. ‘Smart’ is trendy, but when becoming ‘smart’ leads to motivation that is an important step towards mitigating climate change.

Technology Politics, An Analytical Unit

1982 ◽  
Vol 32 ◽  
pp. 17-17
Author(s):  
Stephen R. Lefevre
Keyword(s):  
Building Materials ◽  
Space Shuttle ◽  
Renewable Energy Sources ◽  
Transportation Systems ◽  
Synthetic Fuels ◽  
Public And Private ◽  
Policy System ◽  
Home Building ◽  
Automobile Engines ◽  
Civilian Defense

Political scientists are increasingly interested in understanding policymaking in civilian, defense and space technologies. The answer to the question why this is, is found partly in the emergence of the policy field itself, and partly in the enormously expanded role that government stimulus of technological innovation is playing in the public and private sectors. A listing of some recent programs — breeder and fusion reactor R&D, the space shuttle, windmill farm demonstration programs, synthetic fuels programs, and dial-a-ride transportation systems — gives some indication of the scope of federal involvement, and points up some of the implications that this enlarged role has for the student of public policy. Why, for instance, has government elected to stimulate innovations in certain technologies and not others? Who are the key actors shaping the policymaking process in R&D? Are their gaps in federal efforts? Is the policy system responding effectively to needs for renewable energy sources, alternative home building materials, gasoline-efficient automobile engines, etc?

scholarly journals Electric Mobility in Cities: The Case of Vienna

Energies ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 217
Author(s):  
Amela Ajanovic ◽  
Marina Siebenhofer ◽  
Reinhard Haas
Keyword(s):  
Electric Vehicles ◽  
Future Development ◽  
Urban Areas ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Road Transport ◽  
Electric Mobility ◽  
Policy Framework ◽  
The Future ◽  
Historical Developments

Environmental problems such as air pollution and greenhouse gas emissions are especially challenging in urban areas. Electric mobility in different forms may be a solution. While in recent years a major focus was put on private electric vehicles, e-mobility in public transport is already a very well-established and mature technology with a long history. The core objective of this paper is to analyze the economics of e-mobility in the Austrian capital of Vienna and the corresponding impact on the environment. In this paper, the historical developments, policy framework and scenarios for the future development of mobility in Vienna up to 2030 are presented. A major result shows that in an ambitious scenario for the deployment of battery electric vehicles, the total energy demand in road transport can be reduced by about 60% in 2030 compared to 2018. The major conclusion is that the policies, especially subsidies and emission-free zones will have the largest impact on the future development of private and public e-mobility in Vienna. Regarding the environmental performance, the most important is to ensure that a very high share of electricity used for electric mobility is generated from renewable energy sources.

scholarly journals Measuring Accessibility Based on Improved Impedance and Attractive Functions Using Taxi Trajectory Data

2020 ◽  
Vol 13 (1) ◽  
pp. 112
Author(s):  
Helai Huang ◽  
Jialing Wu ◽  
Fang Liu ◽  
Yiwei Wang
Keyword(s):  
Waiting Time ◽  
Urban Areas ◽  
Transportation Systems ◽  
Trajectory Data ◽  
Peak Period ◽  
Important Indicator ◽  
Destination Attractiveness ◽  
Urban Accessibility ◽  
Spatio Temporal ◽  
Taxi Trajectory

Accessibility has attracted wide interest from urban planners and transportation engineers. It is an important indicator to support the development of sustainable policies for transportation systems in major events, such as the COVID-19 pandemic. Taxis are a vital travel mode in urban areas that provide door-to-door services for individuals to perform urban activities. This study, with taxi trajectory data, proposes an improved method to evaluate dynamic accessibility depending on traditional location-based measures. A new impedance function is introduced by taking characteristics of the taxi system into account, such as passenger waiting time and the taxi fare rule. An improved attraction function is formulated by considering dynamic availability intensity. Besides, we generate five accessibility scenarios containing different indicators to compare the variation of accessibility. A case study is conducted with the data from Shenzhen, China. The results show that the proposed method found reduced urban accessibility, but with a higher value in southern center areas during the evening peak period due to short passenger waiting time and high destination attractiveness. Each spatio-temporal indicator has an influence on the variation in accessibility.

Sign in / Sign up

Export Citation Format

Share Document