scholarly journals Designing a User Participation-Based Bike Rebalancing Service

2019 ◽  
Vol 11 (8) ◽  
pp. 2396 ◽  
Author(s):  
Seonghoon Ban ◽  
Kyung Hoon Hyun

The Bicycle-sharing System (BSS) has been globally adopted as a sustainable transportation system that helps improve air pollution, public health and traffic congestion. The increased usage of BSSs requires an increased number of rebalancing trucks to distribute bikes throughout the city. Operating rebalancing trucks is an expensive venture that requires intensive manpower that is dependent on traffic congestion. In this background, a user participation-based rebalancing service was introduced to solve the problem, but it was difficult to test the impact of the service and the estimated cost in the city. Thus, this research proposes a simulation system that tests user participation-based rebalancing services with different user parameters such as the amount of incentives, the user participation rate and extra walking distances. We conducted an incentive survey on actual BSS users to determine the accurate values of these parameters. We also identified that, among the three parameters, extra walking distance is the most influential element on which to improve the rebalance imbalance metric. We found that the incentive coefficient is an important variable in determining the estimated cost of the service. Thus, any city can utilize the proposed system to design a user participation-based rebalancing service that is suitable for their city.

Author(s):  
Xiao Liang ◽  
Gonçalo Homem de Almeida Correia ◽  
Bart van Arem

This paper proposes a method of assigning trips to automated taxis (ATs) and designing the routes of those vehicles in an urban road network, and also considering the traffic congestion caused by this dynamic responsive service. The system is envisioned to provide a seamless door-to-door service within a city area for all passenger origins and destinations. An integer programming model is proposed to define the routing of the vehicles according to a profit maximization function, depending on the dynamic travel times, which varies with the ATs’ flow. This will be especially important when the number of automated vehicles (AVs) circulating on the roads is high enough that their routing will cause delays. This system should be able to serve not only the reserved travel requests, but also some real-time requests. A rolling horizon scheme is used to divide one day into several periods in which both the real-time and the booked demand will be considered together. The model was applied to the real size case study city of Delft, the Netherlands. The results allow assessing of the impact of the ATs movements on traffic congestion and the profitability of the system. From this case-study, it is possible to conclude that taking into account the effect of the vehicle flows on travel time leads to changes in the system profit, the satisfied percentage and the driving distance of the vehicles, which highlights the importance of this type of model in the assessment of the operational effects of ATs in the future.


2021 ◽  
Vol 18 (3) ◽  
pp. 12-26
Author(s):  
A. Yu. Talavirya ◽  
M. B. Laskin

The purpose of the article is to assess the risks of a toll road operator arising in the event of traffic congestion at toll collection points. In the Russian Federation, in infrastructure projects, including toll road projects, the organizational and legal form of public-private partnership is often used. State authorities have the right to control the quality of the road management by the operator; the state can charge penalty points for low operational efficiency, leading to traffic congestion. The return on investment in infrastructure projects is of a long-term nature, therefore, the task of assessing the risks of possible losses by the toll road operator is quite relevant.Materials and methods. The main research tool is simulation modeling in the AnyLogic software environment, the analysis of the data obtained as a result of simulation was carried out in the environment of the statistical package R. The choice of tools is determined by a large number of subjective (sometimes technical) factors that significantly affect the road capacity at toll collection points, but do not lend themselves to strict formalization. Such factors include refusals to read electronic tolls, drivers changing lanes in the toll collection points, lack of money at the time of travel through the automatic toll lane, and others. All such factors are modeled in the AnyLogic environment as random variables with a rich choice of distribution functions and their parameters.Results. A simulation model of a toll collection point at an exit from a toll road has been created to analyze the throughput of a toll booth with various configurations of toll lanes, various levels of user behavior errors and the provision of drivers with electronic means of travel registration. Using the example of a toll collection point for the “Western High-Speed Diameter” motorway, the parameters of traffic congestion that occur when the number of operating toll lanes on the toll collection point decreases are estimated. In the event of congestion, for each configuration, estimates of the number of vehicles in the congestion, the length of the congestion, the waiting time in the queue at the entrance to the toll collection point at different times of the day, and the time of congestion are determined.Conclusion. Based on the results obtained, an assessment of the risks of non-compliance by the road operator with the standard for ensuring throughput can be carried out. To assess the risks of a toll road as a whole, it is advisable to use an individual simulation model for each toll collection point, taking into account the peculiarities of its geographical location, the composition of traffic at the facility, the regularity of user correspondence, as well as the impact of the surrounding transport, logistics and social infrastructure. In pronounced industrial and logistics areas of the city, in the border zones between the city and the region, an additional assessment of traffic intensity may be required to analyze the throughput of toll collection points, taking into account the daily, weekly and seasonal unevenness of the traffic flow.


Author(s):  
T. Moyo ◽  
A. Kibangou ◽  
W. Musakwa

Abstract. In developing countries, metropolitan cities, due to their economic activities, attract an increasing amount of commuters on a daily basis. This has led to major freeways and roads experiencing high levels of congestion and consequently high pollution levels. In 2020, due to a global pandemic of an outbreak of Corona Virus (COVID-19), the national government declared a national shutdown with only essential traffic being allowed to operate. Given the scenario of the national lock-down this allows for the statistical analysis of the impact of essential traffic on the overall transportation system. Consequently the aim of the paper was to assess the congestion and CO2 emission impact of essential traffic for the City of Johannesburg. Using an exploratory approach, we monitored and collected traffic congestion data from the Tomtom traffic index for the metropolitan city of Johannesburg, South Africa. We develop a relationship between congestion and pollution to visualise the daily variations in pollution and congestion levels. We demonstrate this by comparing variations in congestion levels in two epochs, viz the period without movement restrictions and the period whereby movement is restricted. The results reveal essential traffic on the congestion index to be below 22 percent for both weekends and weekdays. A scenario common only during weekends in 2019. Whilst for the emission index, CO2 levels are approximately less than 45 percent throughout the week. The paper concludes the investment into mining and analysing traffic data has a significantly role for future mobility planning in both the developed and developing world and, more generally, improving the quality of commuting trips in the city.


Author(s):  
Aledia Bilali ◽  
Ulrich Fastenrath ◽  
Klaus Bogenberger

Ride pooling services are considered as a customer-centric mode of transportation, but, at the same time, an environmentally friendly one, because of the expected positive impacts on traffic congestion. This paper presents an analytical model that can estimate the traffic impacts of ride pooling on a city by using a previously developed shareability model, which captures the percentage of shared trips in an area, and the existence of a macroscopic fundamental diagram for the network of consideration. Moreover, the analytical model presented also investigates the impact that improving the average velocity of a city has on further increasing the percentage of shared trips in an operation area. The model is validated by means of microscopic traffic simulations for a ride pooling service operating in the city of Munich, Germany, where private vehicle trips are substituted with pooled vehicle trips for different penetration rates of the service. The results show that the average velocity in the city can be increased by up to 20% for the scenario when all private vehicle trips are substituted with pooled vehicle trips; however, the improvement is lower for smaller penetration rates of ride pooling. The operators and cities can use this study to quickly estimate the traffic impacts of introducing a ride pooling service in a certain area and for a certain set of service quality parameters.


2021 ◽  
Author(s):  
◽  
Emma Cunningham

<p>The attraction of the suburban lifestyle for many, is the comforting uniformity and lack of density, the desire to own your own little patch of land to use however you please. However, the lack of diversity this lifestyle offers is also a key reason as to why certain demographics are choosing to relocate back to urban centres. A significant number of young adults are rethinking where they want to live, work and play, and they are choosing the city. They are revitalising entire neighbourhoods, making urban living fun and safe for all ages. In choosing the city, they have begun to dream something different to the lifestyle defined as the traditional “Suburban Dream” (Breen & Rigby, 2004).   As the population continues to increase, available land for development decreases, resulting in suburban sprawl. The consequences of this pattern of suburban sprawl include social issues such as a lack of human contact and a declining sense of community. As people are having to spend longer travelling to and from work in the city, they therefore tend to stay in their homes once they return at the end of a long day. Other key consequences include increased traffic congestion and the resultant environmental problems such as increased petrol consumption, reduced air quality and farmland destruction (Breen & Rigby, 2004). In contrast, the urban neighbourhood has a sense of community about it, many features are within walking distance and the footpaths and walkways promote a friendly, social environment, which may be lacking or hard to access in the sprawling suburbs.   This research portfolio aims to develop and present an alternative approach to living in inner city New Zealand. A new strategy that will bridge the gap between the typology of the spacious suburban home and over developed, inner city apartment blocks by adapting unused or underutilised sites already existing within the urban fabric. Often people are reluctant to downsize from the commodious suburban homes that they have grown accustomed to. Therefore, this proposed housing must take the fundamentals of suburban housing and condense it into a compact model suitable for the urban environment while also meeting the needs and expectations of the intended occupants.   The objective is to create compact homes that will beautify and give new purpose to unused spaces in the urban environment. As a way of reducing urban sprawl by adapting vacant spaces which already exist within the urban fabric. Learning from, and developing upon successful infill strategies already employed throughout the world dealing with the issue of underutilised urban space. These homes should not detract, but rather add to the appearance of the present streetscape for current residents. Repurposing vacant sites and spaces into condensed, compact, comfortable housing solutions to encourage those looking to relocate from suburban to urban therefore reducing the suburban sprawl.</p>


Author(s):  
Mikhail Slepnev ◽  
Evgeniya Filyakova

The article considers the impact of recreational load on the natural-anthropogenic region — Central park «Kul'tury I Otdykha» in the city of Oryol. To ensure the sustainable development of natural areas, the ability of components of the environment to heal itself in the conditions of anthropogenic impact is of particu-lar importance. Most of the anthropogenic load in a large city is the recreational load, which significantly affects the natural frame of urban areas. Recreational load causes a significant degradation of the natural complex of the city, and its value is determined by the planning structure of urban development, which deter-mines the distribution of population density and transport accessibility of recreation facilities. Calculated data revealed the recreational load from the planning structure of the residential area located within walking distance from the coastal recreational zone. Ensuring the safety of urban parks, it is necessary to work with complete and reliable information that can only be obtained through regular monitoring studies. The spatial organization of coastal recreational zones should meet the objectives of maintaining and improving the eco-logical balance of recreational areas, as well as the formation of a comfortable architectural and planning structure of recreational zones and the selection of the most significant recreational formations based on the ecological and recreational capabilities of natural areas and the needs of the population. In this regard, it is necessary to develop functional zoning of natural-anthropogenic regions to regulate the level of recreational impact, and ensure the sustainability of ecological systems of the city. To monitor the level of anthropogenic impacts, the definition is used — the ecological capacity, which is determined by the limiting values of an-thropogenic loads determined on the basis of field observations.


2021 ◽  
Vol 17 (2) ◽  
pp. 262
Author(s):  
Nurhazirah Hashim ◽  
Veera Pandiyan Kaliani Sundram ◽  
Siti Halijjah Shariff ◽  
Amin Pujiati ◽  
Anindya Ardiansari

  Abstract: The increased awareness of the impact of carbon dioxide (CO2) emissions and consumption of fossil fuels on the environment has led to world-wide research focused on sustainable transportation solutions. University campuses are one of the affected environments involved in this issue as a high dependency on private vehicles causes’ traffic congestion in the campus area particularly during peak hours leading to concerns about parking especially for the established universities. Therefore, alternative transport solutions should be considered in minimizing the environmental consequences specifically within the campus area. This study aims to examine the extent of sustainable transportation practices implemented by a university campus in a developing country, Malaysia and Indonesia. A survey methodology was applied using self-administered questionnaires as the main technique of data collection. Both, UiTM Puncak Alam, Selangor, Malaysia and Universitas Negeri Semarang, Indonesia are selected as the sample study and the target observations are focused on the transportation pathway which includes transportation modes, passengers, terminal and parking space. The study is expected to enrich the existing sustainable model of Stakeholder Theory to deliver a more robust competency model to provide solutions in creating sustainable transportation in university campuses. Subsequently, the outcome would support Sustainable Development Goals (SDGs 2030), Mid-term Review of the Eleventh Malaysia Plan [2016 – 2020], Indonesia’s long-term development plan to phase IV period 2020-2025 through better adoption of low- carbon supply chain practices in order to reduce GHG emission. This is in line with Malaysia and Indonesia’s commitment in being a key part of the global transition to a low-carbon, and eventually carbon- neutral society by 2050 Keywords: Environmental, Indonesia, Malaysia, Sustainable, Transportation, University


2021 ◽  
Author(s):  
◽  
Emma Cunningham

<p>The attraction of the suburban lifestyle for many, is the comforting uniformity and lack of density, the desire to own your own little patch of land to use however you please. However, the lack of diversity this lifestyle offers is also a key reason as to why certain demographics are choosing to relocate back to urban centres. A significant number of young adults are rethinking where they want to live, work and play, and they are choosing the city. They are revitalising entire neighbourhoods, making urban living fun and safe for all ages. In choosing the city, they have begun to dream something different to the lifestyle defined as the traditional “Suburban Dream” (Breen & Rigby, 2004).   As the population continues to increase, available land for development decreases, resulting in suburban sprawl. The consequences of this pattern of suburban sprawl include social issues such as a lack of human contact and a declining sense of community. As people are having to spend longer travelling to and from work in the city, they therefore tend to stay in their homes once they return at the end of a long day. Other key consequences include increased traffic congestion and the resultant environmental problems such as increased petrol consumption, reduced air quality and farmland destruction (Breen & Rigby, 2004). In contrast, the urban neighbourhood has a sense of community about it, many features are within walking distance and the footpaths and walkways promote a friendly, social environment, which may be lacking or hard to access in the sprawling suburbs.   This research portfolio aims to develop and present an alternative approach to living in inner city New Zealand. A new strategy that will bridge the gap between the typology of the spacious suburban home and over developed, inner city apartment blocks by adapting unused or underutilised sites already existing within the urban fabric. Often people are reluctant to downsize from the commodious suburban homes that they have grown accustomed to. Therefore, this proposed housing must take the fundamentals of suburban housing and condense it into a compact model suitable for the urban environment while also meeting the needs and expectations of the intended occupants.   The objective is to create compact homes that will beautify and give new purpose to unused spaces in the urban environment. As a way of reducing urban sprawl by adapting vacant spaces which already exist within the urban fabric. Learning from, and developing upon successful infill strategies already employed throughout the world dealing with the issue of underutilised urban space. These homes should not detract, but rather add to the appearance of the present streetscape for current residents. Repurposing vacant sites and spaces into condensed, compact, comfortable housing solutions to encourage those looking to relocate from suburban to urban therefore reducing the suburban sprawl.</p>


2020 ◽  
Vol 165 ◽  
pp. 04016
Author(s):  
Wenhao Tan ◽  
Linfeng Liu ◽  
Yage Cui ◽  
Jintao Chen ◽  
Feng Lin ◽  
...  

The paper analysed the impact of accessibility of urban parks within the third ring on housing prices of Fuzhou through network analysis and SPSS correlation analysis based on data of sources like remote-sensing image, web crawling and urban road network, discovering that: (1)The density of residence within the third ring of Fuzhou decreases from the centre to the edges; (2) The housing price, ranging between 18000 and 28000 RMB/ m2, peaks in the city centre; (3) For houses within the third ring of Fuzhou, Gulou District enjoys the greatest access to urban parks while Cangshan District is the poorest in this regard. (4) The residence within the third ring of Fuzhou could be rated as A or A- in terms of access to urban parks, with an overall excellence performance; (5) The walking distance to the parks is significantly correlated with the housing price. The shorter the distance, the higher the price. Regarding this, the paper proposed the following suggestions: (1) Revise the routes to Gaogai Mountain Park by increasing entrances and exists to improve its accessibility; (2) Improve the transportation network and increase footpaths to the park, thus shortening the distance between the park and the surrounding residences.


2022 ◽  
Vol 14 (2) ◽  
pp. 625
Author(s):  
Monica Menendez ◽  
Lukas Ambühl

Increasing mobility and urbanization is important for economic prosperity but leads to higher urban traffic congestion, which is associated with many negative externalities. Therefore, cities are in need of integrative solutions that reduce their transportation network’s spatial and environmental footprint, while maintaining the highest transportation efficiency possible. Focusing on a nontraditional and more sustainable cycle of urban transportation, this paper covers an integrated perspective by describing a combination of individual design and operational measures. To do so, a case study of the city of Zurich is presented, which consistently ranks highly across different indicators, from smart city to sustainability. This paper is therefore a qualitative review of different measures that the city has implemented to become more sustainable. The measures are compared with indicators from the existing literature and classify them into three clusters: (i) measures discouraging private motorized transport, (ii) measures encouraging public transport, and (iii) measures encouraging human-powered mobility. The discussion thereof allows us to integrate the different measures to define a sustainable transportation cycle, which potentially serves as a best-practice example.


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