scholarly journals Assessment of pedestrian mobility on road networks in the City Of Kigali

2020 ◽  
Vol 26 (2) ◽  
pp. 179-190
Author(s):  
David Nkurunziza ◽  
Rahman Tafahomi
Keyword(s):  
Road Networks ◽  
Traffic Signals ◽  
City Center ◽  
The Road ◽  
Bus Stop ◽  
Road Signs ◽  
Physically Challenged ◽  
Road Crossing ◽  
The City ◽  
Alternative Solutions

This paper analyzed and assessed the pedestrians’ mobility issues that are affecting their free movement and safety in the City of Kigali by outlining  the major challenges in the City and providing alternative solutions and measures for improving the mobility and safety of pedestrians. The  methodology of the paper was designed based on qualitative method with application of structured and unobtrusive. Referring to the paper  findings about the mobility challenges of pedestrians within the City of Kigali, it is noted that the mobility of the pedestrians and their safety is still  low and typical problems including road crossing viewed as the second challenges about pedestrians mobility, walking along very close to the road networks due to insufficient footpaths, lacking of enough road signs, lacking of information about pedestrian behavior on road networks, and  improper functioning of existing traffic signals as the first challenge. The paper found that the majority of road networks in the City of Kigali did not provide walkways, traffics signals designs and availability is very poor and some of them not functioning, zebra crossing facilities were not provided adequately, pedestrians shelter on bus stop are almost absent and ignored, vehicles travelling speed is still high and does not allow pedestrians to move freely, and the mobility of physically challenged people has been forgotten and there is a need of introducing the pedestrian overpass bridges in clouded zones of the city center, Nyabugogo, Kicukiro and Remera-Giporoso areas of the City of Kigali. Keywords: Mobility, Pedestrian Safety, Road Networks, Traffic Signals, Pedestrians.

scholarly journals Extracting Main Center Pattern from Road Networks Using Density-Based Clustering with Fuzzy Neighborhood

2019 ◽  
Vol 8 (5) ◽  
pp. 238 ◽  
Author(s):  
Xiaojie Cui ◽  
Jiayao Wang ◽  
Fang Wu ◽  
Jinghan Li ◽  
Xianyong Gong ◽  
...  
Keyword(s):  
Spatial Data ◽  
Spatial Clustering ◽  
Road Networks ◽  
City Center ◽  
The Road ◽  
Data Matching ◽  
Density Based Clustering ◽  
The City ◽  
Center Area ◽  
Main Center

The spatial pattern is a kind of typical structural knowledge that reflects the distribution characteristics of object groups. As an important semantic pattern of road networks, the city center is significant to urban analysis, cartographic generalization and spatial data matching. Previous studies mainly focus on the topological centrality calculation of road network graphs, and pay less attention to the delineation of main centers. Therefore, this study proposes an automatic recognition method of main center pattern in road networks. We firstly extract the main clusters from road nodes by improving the Density-Based Spatial Clustering of Applications with Noise (DBSCAN) with fuzzy set theory. Moreover, the center area is generated with road meshes according to the area ratio with the covering discs of the main clusters. This proposed algorithm is applied to the road networks of a monocentric city and polycentric city respectively. The results show that our method is effective for identifying the main center pattern in the road networks. Furthermore, the contrast experiments demonstrate our method’s higher accuracy.

scholarly journals Opportunities to improve road traffic on short-length road connections by correlating intersection traffic lights

2022 ◽  
Vol 960 (1) ◽  
pp. 012020
Author(s):  
A Boroiu ◽  
E Neagu ◽  
A A Boroiu
Keyword(s):  
Road Traffic ◽  
Central Area ◽  
Green Light ◽  
Traffic Light ◽  
City Center ◽  
Traffic Lights ◽  
The Road ◽  
Micro Simulation ◽  
Road Intersections ◽  
The City

Abstract The paper aims to explore the possibilities of improving road traffic in the central area of cities characterized by a longitudinal arrangement of the street network, with application for the case of Pitesti, where the road network in the central area consists of two main roads arranged longitudinally, having one-way regulated traffic, interconnected by several streets. A special traffic problem is reported in the city center: on the main road connecting the two boulevards, the vehicle storage space is insufficient - because the distance between the two road intersections is too small and there is no correlation between the Green phases of traffic lights in the two intersections. The research, based on traffic measurements performed with DataFromSky software and micro-simulation traffic analyses performed with Vissim PTV software, indicated that the best solution is the partial or total correlation of the green time from the traffic light intersections that delimit the connecting road artery. As, almost exclusively, the works dedicated to the correlation of green light of traffic lights treat the problem only along the road arteries, this paper raises a special issue and reveals the possibility of simple solutions, by correlating the traffic lights at the intersections connecting the main arteries.

Acoustic Prediction Modeling and Sound Mapping of public transport users' exposure at a bus stop.

2021 ◽  
Vol 263 (2) ◽  
pp. 4058-4069
Author(s):  
Dayane Cristina Lima Estercio ◽  
Paulo Fernando Soares
Keyword(s):  
Road Traffic ◽  
Traffic Noise ◽  
Sound Level ◽  
Road Traffic Noise ◽  
High Frequencies ◽  
Reference Models ◽  
The Road ◽  
Bus Stop ◽  
Specular Reflections ◽  
The City

The objective of this research is to develop a mathematical model to predict the road traffic noise level at the bus stop, to assess the level of noise that users of these urban facilities are exposed daily. To help assess the exposure and the environmental impact, sound mapping will be performed using the IMMI software. In the model, the calculation of direct paths and specular reflections and diffuse was adopted. The study was applied in three sections in the city of Maringá, Brazil. At each point, the user was simulated standing and sitting. The sound source was positioned on the axis of each strip, every five meters. In total, 5124 readings of source positions were evaluated in 84 measured points. For the validation, the Anderson-Kurze, Kang, Yang and Zhang, Bistafa and Naish model were applied, and then the t-Student test were applied. The results showed a correspondence between the developed model, the data of the measurements and the reference models in the range of 25 Hz to 10000 Hz, there was a greater variance between the models applied in the high frequencies. It is concluded that the model was able to estimate the sound level of the stretches evaluated.

scholarly journals Pedestrians’ Crossing Dilemma during the First Seconds of the Red-Light Phase

2021 ◽  
Vol 10 (6) ◽  
pp. 213
Author(s):  
Iliani Styliani Anapali ◽  
Socrates Basbas ◽  
Andreas Nikiforiadis
Keyword(s):  
Classification Tree ◽  
Red Light ◽  
Descriptive Statistics ◽  
Light Phase ◽  
Safety Concerns ◽  
The Road ◽  
Motorized Vehicles ◽  
Road Crossing ◽  
The City

Most safety concerns for pedestrian trips arise during road crossing, due to the interaction of pedestrians with motorized vehicles. This present paper attempts to explore the factors that have significant impact on pedestrians’ crossing behavior, and to identify the group of pedestrians that appear to be the most prone to crossing a road during the first five seconds of the red phase. In this context, observations were conducted in twelve signalized crossings in one-way roads, in the city of Thessaloniki, Greece. The collected data (600 observations of crossing pedestrians) were analyzed statistically; more specifically, the observations were analyzed through descriptive statistics, and a classification tree was developed for predicting pedestrians’ decisions. The results indicate that pedestrians’ crossing behavior is most of all affected by the behavior of other pedestrians in the signalized crossing. Also, the number of traffic lanes has an impact on pedestrians’ decision to cross the road during the first five seconds of the red-light phase.

scholarly journals Dzsentrifikáció Szöul belvárosában– Cshonggjecshon

2021 ◽  
Vol 145 (1) ◽  
pp. 32-49
Keyword(s):  
Local Communities ◽  
Economic Damage ◽  
Turn Of The Millennium ◽  
City Center ◽  
The Road ◽  
Historic Center ◽  
One Step ◽  
The Cost ◽  
The City

Until the mid-20th century, the historic center of Seoul was divided by a stream in a west-east direction. By the 1950s, the water of the stream had become so polluted that only the full coverage of it could solve the resulting problems. An elevated highway was built in its place. At the turn of the millennium, as part of the rehabilitation of the district, the former creek was excavated, the road demolished and an artificial natural environment created. Although the reconstruction was intended to strengthen the historic character of the city center, the artificial watercourse and the emphasized role of tourism discredited the project to socially-minded critics. In this study, we present all of this, but go one step further and interpret the socio-economic damage resulting from the disintegration of local communities in the working-class neighborhood that has develop dover the decades as the cost of renewal.

scholarly journals Implementasi Location Based Service Pada Aplikasi Mobile Pencarian Halte BRT Transmusi Palembang

2016 ◽  
Vol 2 (1) ◽  
pp. 33
Author(s):  
Usman Ependi ◽  
Suyanto Suyanto
Keyword(s):  
Mobile Device ◽  
Public Transportation ◽  
Mobile Application ◽  
Location Based Service ◽  
Mobile Location ◽  
The Road ◽  
Bus Stop ◽  
Bus Stops ◽  
The City

Abstrak— BRT Transmusi Palembang, merupakan sarana angkutan umum masyarakat kota palembang yang sedang berkembang dengan pesat. Sampai saat ini armadanya sudah mencapai 180 unit dan didukung dengan keberadaan halte yang jumlahnya mencapai 290 halte. Untuk menggunakan jasa BRT TransMusi, masyarakat terlebih dahulu harus menuju ke halte terdekat. Banyaknya halte yang tersebar di penjuru kota Palembang, justru menyebabkan kebingungan bagi pengguna untuk menentukan halte mana yang harus dia tuju. Untuk itu, masyarakat perlu panduan agar bisa menemukan dan menuju halte dengan cepat. Penelitian ini mengembangkan aplikasi mobile pencarian halte BRT TransMusi berbasis lokasi. Dengan aplikasi ini pengguna dapat dengan mudah menemukan dan menuju halte terdekat dari posisinya berada karena aplikasi ini akan menampilkan peta jalan untuk menuju ke lokasi halte terdekat. Aplikasi ini dikembangkan dalam bentuk mobile, karena pengguna akan lebih mudah dan lebih cepat dalam mengakses aplikasi ini. Selain itu dengan perangkat mobile pengguna bisa mengakases aplikasi ini kapan saja dan dimana saja dalam wilayah kota Palembang.Kata Kunci— Halte, transmusi, mobile, location base serviceAbstract— BRT Transmusi Palembang, a public transportation city of Palembang society that is growing rapidly. To date the fleet has reached 180 units and is supported by the presence of the stop number reached 290 stops. To use TransMusi BRT services, people must first go to the nearest bus stop. The number of bus stops are scattered throughout the city of Palembang, it causes confusion for users to determine which one should stop him going. For that, people need to be able to find a guide to the bus stop and quickly. This study developed a mobile application search BRT TransMusi stop location-based. With this application, users can easily find and headed to the nearest stop of the position is because the application will display a map of the road to get to the nearest bus stop locations. The application was developed in the form of mobile, because users will be easier and faster to access this application. In addition to mobile device users can access the application anytime and anywhere within the city of Palembang.Keywords— Halte, transmusi, mobile, location base service

Roadrunner+: An Autonomous Intersection Management Cooperating with Connected Autonomous Vehicles and Pedestrians with Spillback Considered

2022 ◽  
Vol 6 (1) ◽  
pp. 1-29
Author(s):  
Michael I.-C. Wang ◽  
Charles H.-P. Wen ◽  
H. Jonathan Chao
Keyword(s):  
Collision Avoidance ◽  
Autonomous Vehicles ◽  
Waiting Times ◽  
Traffic Signals ◽  
Traffic Load ◽  
The Road ◽  
Road Capacity ◽  
Recent Emergence ◽  
Road Crossing ◽  
Intersection Management

The recent emergence of Connected Autonomous Vehicles (CAVs) enables the Autonomous Intersection Management (AIM) system, replacing traffic signals and human driving operations for improved safety and road efficiency. When CAVs approach an intersection, AIM schedules their intersection usage in a collision-free manner while minimizing their waiting times. In practice, however, there are pedestrian road-crossing requests and spillback problems, a blockage caused by the congestion of the downstream intersection when the traffic load exceeds the road capacity. As a result, collisions occur when CAVs ignore pedestrians or are forced to the congested road. In this article, we present a cooperative AIM system, named Roadrunner+ , which simultaneously considers CAVs, pedestrians, and upstream/downstream intersections for spillback handling, collision avoidance, and efficient CAV controls. The performance of Roadrunner+ is evaluated with the SUMO microscopic simulator. Our experimental results show that Roadrunner+ has 15.16% higher throughput than other AIM systems and 102.53% higher throughput than traditional traffic signals. Roadrunner+ also reduces 75.62% traveling delay compared to other AIM systems. Moreover, the results show that CAVs in Roadrunner+ save up to 7.64% in fuel consumption, and all the collisions caused by spillback are prevented in Roadrunner+.

scholarly journals Emergence of spatial transitions in urban congestion dynamics

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Aniello Lampo ◽  
Javier Borge-Holthoefer ◽  
Sergio Gómez ◽  
Albert Solé-Ribalta
Keyword(s):  
Urban Areas ◽  
Road Networks ◽  
City Center ◽  
Traffic Dynamics ◽  
Design And Optimization ◽  
Spatial Properties ◽  
Realistic Situation ◽  
Geographical Regions ◽  
Edge Distribution ◽  
The City

AbstractThe quantitative study of traffic dynamics is crucial to ensure the efficiency of urban transportation networks. The current work investigates the spatial properties of congestion, that is, we aim to characterize the city areas where traffic bottlenecks occur. The analysis of a large amount of real road networks in previous works showed that congestion points experience spatial abrupt transitions, namely they shift away from the city center as larger urban areas are incorporated. The fundamental ingredient behind this effect is the entanglement of central and arterial roads, embedded in separated geographical regions. In this paper we extend the analysis of the conditions yielding abrupt transitions of congestion location. First, we look into the more realistic situation in which arterial and central roads, rather than lying on sharply separated regions, present spatial overlap. It results that this affects the position of bottlenecks and introduces new possible congestion areas. Secondly, we pay particular attention to the role played by the edge distribution, proving that it allows to smooth the transitions profile, and so to control the congestion displacement. Finally, we show that the aforementioned phenomenology may be recovered also as a consequence of a discontinuity in the node’s density, in a domain with uniform connectivity. Our results provide useful insights for the design and optimization of urban road networks, and the management of the daily traffic.

scholarly journals Pedestrians’ Non-Compliance with Road Safety Regulations in Dhaka City

2019 ◽  
Vol 26 (2) ◽  
Author(s):  
Shah Md. Azimul Ehsan
Keyword(s):  
Road Safety ◽  
Social Research ◽  
Safety Issue ◽  
Dhaka City ◽  
The Road ◽  
Road Signs ◽  
Road Users ◽  
Safety Regulations ◽  
The Government ◽  
Road Crossing

Since the Dhaka City's population is increasing, there is an urgency for sustainable transport policy forDhaka to retain and expand the modal share of walking trips, which share the bulk of all short tripsmade. However, pedestrian facilities are perhaps the most neglected and unattended ones in transportplanning of Dhaka city. Day by day, the rate of fatality is increasing in an unabated manner. If the ratehas to be controlled, it is imperative to know the various factors which result in the violation of trafficregulations by the pedestrians. This paper aims to know the various underlying reasons behind thepedestrians' non-compliance with the road safety regulations using both qualitative and quantitative toolsof social research. The findings of the study suggest that the existing road crossing facilities (overpass,zebra crossing) are inadequate as per demand. Poor monitoring and maintenance of the overpasses havemade them a hub for hawkers, beggars, addicts which demotivates the pedestrians in using them. Failureto provide and maintain road signs and markings, lack of education of road users, poor enforcement oftraffic regulations etc. are some of the other factors which result to traffic rules violation by thepedestrians. The study provides a modest suggestion to the government that they should think of givingroad safety issue a priority in the policy agenda. Moreover, necessary steps should be taken to increasethe current road crossing facilities along with the formation of a watchdog body that will monitor theviolations from time to time. Lastly, mass awareness building programs have to be initiated for educatingboth the pedestrians and the drivers regarding the road safety regulations.

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