Identifying and Visualizing Congestion Bottlenecks with Automated Vehicle Location Systems

Author(s):  
Christopher Bucknell ◽  
Alejandro Schmidt ◽  
Diego Cruz ◽  
Juan Carlos Muñoz

Monitoring speeds and identifying problem areas are essential for any public transport system because of the direct impact on its operating costs and on users’ travel time. This study generated a tool that identified, quantified, and displayed operational bottlenecks of bus operation in a city. The model was applied to the public transport system in Santiago, Chile, which faced a steady decline in operating speed. It was possible to identify locations with the most serious problems; this factor allowed transit authorities to focus their efforts on the areas that needed it the most. In addition, it was found that problems were concentrated in certain sectors of the city, including the central business district and intersections where the radial axis roads encountered the city’s central ring road. Once a problem is identified, it is essential to conduct site visits and combine the findings of this research with other sources of information to find the cause of the problem and propose solutions.

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1215-1218

Public transportation is one of the sustainable form of transportation which provides mobility options for the people. The public transport services are very basic need of people’s lives, especially in developing world. It is the basic means for mobility of a large percent of people and hence it is the driving force of economic and social life. Quality of service, characterized by the Level-of-Service (LoS) is one of the major factors determining the demand for public transport. This study tries to determine the city-wide Level-of-Service provided by the public transport system using the service level benchmarks as a case study of Trivandrum city. The indicators for determining the Level-of-Service used in the study are presence of organized public transport system, availability or extend of public transport supply, service coverage, average waiting time, level of comfort in public transport and the fleet availability. This approach can be used to determine the LoS at the city-level and thus provides a measure for identifying the public transport quality of an urban area.


Author(s):  
Tatenda Mbara ◽  
Smart Dumba ◽  
Tapiwa Mukwashi

Cities in the developing world are growing both geographically and demographically. Thisgrowth has increased pressure on services, including the public transport systems used bythe majority of people. In the last two decades public transport provision has undergoneconsiderable changes. Concomitant to these changes there has been debate on the formof public transport to be operated. Such debate has been informal, general, and at timesacademic, and therefore not able to provide substantive understanding of the views of keystakeholders. Zimbabwe has had an explosion of informal transport activity in the formof minibuses, and decision makers appear to be in a policy dilemma because of a need tostrike a balance between maximising passenger welfare whilst protecting the livelihoods ofindigenous minibus operators and striving to build an efficient and environmentally soundurban transport system. Critical questions for policy dialogue in this conundrum include,inter alia: How do stakeholders perceive the current public transport system? How can publictransport be sustainably provided? This study seeks to answer these questions using a casestudy of Harare. A qualitative research approach blended with some quantitative aspects wasused. Initial steps involved the identification and clustering of key urban public passengertransport stakeholders, followed by structured and unstructured interviews. Although thereis lack of consensus on the form of public transport that the City of Harare should adopt, thereis a strong view that a mass transit system is the backbone of sustainable public transport.


2019 ◽  
Vol 8 (2S3) ◽  
pp. 1019-1022

Public transportation is one of the sustainable form of transportation which provides mobility options for the people. The public transport services are very basic need of people’s lives, especially in developing world. It is the basic means for mobility of a large percent of people and hence it is the driving force of economic and social life. Quality of service, characterized by the Level-of-Service (LoS) is one of the major factors determining the demand for public transport. This study tries to determine the city-wide Level-of-Service provided by the public transport system using the service level benchmarks as a case study of Trivandrum city. The indicators for determining the Level-of-Service used in the study are presence of organized public transport system, availability or extend of public transport supply, service coverage, average waiting time, level of comfort in public transport and the fleet availability. This approach can be used to determine the LoS at the city-level and thus provides a measure for identifying the public transport quality of an urban area.


2019 ◽  
Vol 10 (2) ◽  
pp. 11-22 ◽  
Author(s):  
Jacek Caban ◽  
Agnieszka Dudziak

Abstract The insertion of a city bike that complements the public transport system in large agglomerations, and mainly in the most crowded city centers, seems to be a very good solution that can contribute to reducing air pollution and reducing noise levels. In many situations, bicycle transport can perfectly fill deficiencies in public transport, e.g. at night, on holidays and on days when buses run to a limited extent. The article presents the functioning of the city bike system in Lublin since 2014. The first part of this article presents basic data on the city bike system in Lublin together with a map of bicycle stations, followed by data on the number of rentals, rental time, number of bicycle users, etc. Selected user opinions obtained on the basis of the survey were also presented. Finally, based on the analysis, final conclusions were formulated. The city bike system is used by about 10% of the population of the city of Lublin.


Terr Plural ◽  
2021 ◽  
Vol 15 ◽  
pp. 1-17
Author(s):  
Leonardo Henrique Alves de Lima Nascimento ◽  
Gleyber Eustáquio Calaça Silva ◽  
Alexandre Magno Diniz Alves ◽  
Paulo Henrique Caetano

This paper analyzes how the restructuring of the public transport system in the city of Belo Horizonte collaborated with the territorial expansion of the Heavy Metal identity group. Based on the revisions of urban planning registers from RMBH and excerpts from interviews conducted with the musicians of the scene. It was clear mobility structure changes have increased the spreading of the Heavy Metal movement. It has coincided with the period of this musical genre popularization and greater accessibility to it, which resulted in new relationships between headbangers and the urban space of the city.


Author(s):  
Eva Hitado Hernández ◽  
Juan Gonzalez Jiménez ◽  
Carolina Sanz Pecharromán

In Muscat, the capital of Oman with over one million inhabitants, urban public transport practically does not exist and the use of private cars is dramatically increasing. As a result, accident rates and traffic congestion, two particularly pressing concerns in the urban area of the capital, have both risen. This situation has focused the concern of public administrations and has led to the urgent need of developing a Public Transport System in the city In order to develop this system in an integrated manner, the plan proposes to unify and organize regulation and management of public transport by creating a public transport authority, headed by the Ministry of Transport and with a very strong involvement of Muscat Municipality. By 2015 only two urban bus lines operate in Muscat, covering a small area of the city–Wadi Adei, Wadi Kabir and Ruwi. Therefore, the plan adopts a conservative approach by proposing the implementation of a comprehensive urban bus network –composed by trunk and feeder lines adapted to the low density of the city- before establishing other high capacity solutions, such as BRT or LRT. A key element of the system is the number of 13,400 taxis and microbuses that represent the only alternative to the 317,000 cars of Muscat. The plan suggests the reorganization and further regulation of the sector to achieve the professionalization of the taxi services and the migration of existing users, part of them to the professionalised taxi services and the other part to the implemented public transport services.DOI: http://dx.doi.org/10.4995/CIT2016.2016.3457


Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4384
Author(s):  
Hanhee Kim ◽  
Niklas Hartmann ◽  
Maxime Zeller ◽  
Renato Luise ◽  
Tamer Soylu

This paper shows the results of an in-depth techno-economic analysis of the public transport sector in a small to midsize city and its surrounding area. Public battery-electric and hydrogen fuel cell buses are comparatively evaluated by means of a total cost of ownership (TCO) model building on historical data and a projection of market prices. Additionally, a structural analysis of the public transport system of a specific city is performed, assessing best fitting bus lines for the use of electric or hydrogen busses, which is supported by a brief acceptance evaluation of the local citizens. The TCO results for electric buses show a strong cost decrease until the year 2030, reaching 23.5% lower TCOs compared to the conventional diesel bus. The optimal electric bus charging system will be the opportunity (pantograph) charging infrastructure. However, the opportunity charging method is applicable under the assumption that several buses share the same station and there is a “hotspot” where as many as possible bus lines converge. In the case of electric buses for the year 2020, the parameter which influenced the most on the TCO was the battery cost, opposite to the year 2030 in where the bus body cost and fuel cost parameters are the ones that dominate the TCO, due to the learning rate of the batteries. For H2 buses, finding a hotspot is not crucial because they have a similar range to the diesel ones as well as a similar refueling time. H2 buses until 2030 still have 15.4% higher TCO than the diesel bus system. Considering the benefits of a hypothetical scaling-up effect of hydrogen infrastructures in the region, the hydrogen cost could drop to 5 €/kg. In this case, the overall TCO of the hydrogen solution would drop to a slightly lower TCO than the diesel solution in 2030. Therefore, hydrogen buses can be competitive in small to midsize cities, even with limited routes. For hydrogen buses, the bus body and fuel cost make up a large part of the TCO. Reducing the fuel cost will be an important aspect to reduce the total TCO of the hydrogen bus.


2021 ◽  
pp. 0308518X2110271
Author(s):  
Yao Shen ◽  
Yiyi Xu ◽  
Zhuoya Huang

As an extension of public space, the public transport system in modern society is an arena for cross-group interactions. Uncovering social segregation in public transport space is an essential step in shaping a socially sustainable transport system. Based on 2011 origin–destination flow data for London, we simulate the working flows between each pair of connected tube stations for every occupation with minimised transfer times and travelling hours and calculate the multi-occupation segregation index for all tube stations and segments. This segregation index captures the density and diversity aspects of the working population. The results demonstrate that segregation levels vary significantly across stations, lines, and segments. Transfer stations and tube segments in the city centre do not necessarily have lower levels of segregation. Those stations or segments close to a terminus can also be socially inclusive, e.g., Heathrow. Victoria is the line with the lowest levels of segregation, and Green Park is the most socially inclusive station during commuting peaks. The proposed mapping approach demonstrates the spatial complexity in the social performance of the public transport system and provides a tool for implementing relevant policy with improved precision.


Author(s):  
Arpit Verma

Abstract: In modern context the connectivity of transport system is very important and necessary in an urban and smart city. Due to more population and more vehicles in an urban city, it is not very easy to travel from one location to another location in smooth manner. Availability of different kind of transport mediums like metro, buses, auto, ola, uber etc. helps in travelling within the city by covering different locations. Metro is considered as the primarily best and easy medium for travelling with least congestion and stoppage points. After metro, bus and auto are the secondary public transport medium having frequently used by public on daily basis. Other private transit modes are also available like Ola, Uber and Rapido, who charge according to the travel length, journey time and availability of their service in that area. But if we compare all of them in terms of availability, reliability, speed and smoothness, metro is taken as best and safe way to travel without any hesitation. The connectivity of Lucknow city which is the capital of Uttar Pradesh, India, is having good connectivity in terms of metro and bus medium. But beside metro, due to lack of infrastructure and good management it is sometimes difficult to move from one part of the city to another part by other public transport system. This study will assess the different parameters of public transport system and it will provide the correlation between them. Keywords: Connectivity, Reliability, Infrastructure, Smart City, Smoothness, Transport System.


Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4315
Author(s):  
Mark Richard Wilby ◽  
Juan José Vinagre Díaz ◽  
Rubén Fernández Pozo ◽  
Ana Belén Rodríguez González ◽  
José Manuel Vassallo ◽  
...  

Bicycle Sharing Systems (BSSs) are exponentially increasing in the urban mobility sector. They are traditionally conceived as a last-mile complement to the public transport system. In this paper, we demonstrate that BSSs can be seen as a public transport system in their own right. To do so, we build a mathematical framework for the classification of BSS trips. Using trajectory information, we create the trip index, which characterizes the intrinsic purpose of the use of BSS as transport or leisure. The construction of the trip index required a specific analysis of the BSS shortest path, which cannot be directly calculated from the topology of the network given that cyclists can find shortcuts through traffic lights, pedestrian crossings, etc. to reduce the overall traveled distance. Adding a layer of complication to the problem, these shortcuts have a non-trivial existence in terms of being intermittent, or short lived. We applied the proposed methodology to empirical data from BiciMAD, the public BSS in Madrid (Spain). The obtained results show that the trip index correctly determines transport and leisure categories, which exhibit distinct statistical and operational features. Finally, we inferred the underlying BSS public transport network and show the fundamental trajectories traveled by users. Based on this analysis, we conclude that 90.60% of BiciMAD’s use fall in the category of transport, which demonstrates our first statement.


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