Statistical signatures of the spatial imprints of road network growth

2018 ◽  
Vol 29 (10) ◽  
pp. 1850099 ◽  
Author(s):  
Michelle T. Cirunay ◽  
Rene C. Batac
Keyword(s):  
Road Network ◽  
Urban Setting ◽  
Network Growth ◽  
Statistical Characterization ◽  
Scale Free ◽  
The Road ◽  
Systems Perspective ◽  
Complex Processes ◽  
Self Organized ◽  
Metro Manila

We present a statistical characterization of the morphological features emerging from the complex processes governing the growth of the road network, particularly in a mostly self-organized urban setting. Apart from the usual fractal analysis, the roads are quantified by their lengths and straightnesses, while the segmented blocks are characterized by their areas, perimeters and circularities. When applied to the Metro Manila conurbation, one of the megacities in Asia with the fastest growing populations, we observe dense space-filling and nontrivial statistical distributions of roads and blocks that can be attributed to the geographical constraints of the metropolis. The emergence of the scale-free regimes is explained using a simple rule-based model patterned after the assumed dynamical interplay between the local and global factors involved in individual street formation. By viewing road network growth from a quantitative complex systems perspective, we can gain insights into the underlying rules operating at the local scales that give rise to the global spatial patterns.

scholarly journals SCALE-FREE NETWORK THEORY IN STUDYING THE STRUCTURE OF THE ROAD NETWORK IN POLAND

2014 ◽  
Vol 26 (3) ◽  
pp. 235-242 ◽  
Author(s):  
Katarzyna KOCUR-BERA
Keyword(s):  
Statistical Analysis ◽  
Traffic Flow ◽  
Network Theory ◽  
Road Network ◽  
Scale Free Network ◽  
Scale Free ◽  
The Road ◽  
Normal Character ◽  
Free Network ◽  
The Relationship

This paper discusses the issue of statistical analysis of traffic flow in different regions of Poland. Such analysis allows us to identify “valuable (sensitive) areas” whose damage or blockage may provoke considerable disturbances or even a stoppage of traffic flow in the examined road network. The results of the studies indicate that the road network in Poland has the properties of a scale-free network. The distribution of the examined variables does not have a normal character, whereas the relationship between the number of nodes and the number of connections is a power-law feature. 

Spatial Signatures of Road Network Growth for Different Levels of Global Planning

2021 ◽  
Vol 30 (3) ◽  
pp. 273-296
Author(s):  
Michelle T. Cirunay ◽  
◽  
Rene C. Batac ◽  
Keyword(s):  
Road Network ◽  
Nearest Neighbor ◽  
Scaling Exponent ◽  
Statistical Distributions ◽  
Australian Capital Territory ◽  
Network Growth ◽  
Geometrical Properties ◽  
Self Organized ◽  
Global Planning ◽  
Different Levels

We compare the statistical distributions of the geometrical properties of road networks for two representative datasets under different levels of planning: the cities comprising Metropolitan Manila show the conditions under bottom-up self-organized growth, while Brasilia and the Australian Capital Territory centered at Canberra represent the case of strict top-down planning. The distribution of segmented areas of the cities shows a dual power-law behavior, with the larger areas following the ∼1.9 scaling exponent observed in other cities, while the smaller areas show a lower exponent of ∼0.5, believed to be due to practical considerations. While all cities are found to favor the formation of straight road segments, the planned city roads have a preponderance of sinuous roads, with sinuosities approaching π. A simple model based on a nearest-neighbor directed branching coupled with sectional grid formations is proposed to capture the nontrivial statistical features observed.

scholarly journals ASSESSMENT OF AKURE ROAD NETWORK: A SHORTEST PATH APPROACH

2016 ◽  
Vol 19 (2) ◽  
Author(s):  
SEUN OLUWAJANA ◽  
OLUFIKAYO ADERINLEWO ◽  
ADEBAYO OWOLABI ◽  
SILVANA CROOPE
Keyword(s):  
Shortest Path ◽  
Road Network ◽  
Shortest Paths ◽  
Small World ◽  
Edge Length ◽  
The Road ◽  
Self Organized ◽  
Path Lengths ◽  
The City ◽  
Path Properties

<p>In this paper, the road network of Akure (a city in south western Nigeria) was studied based on its shortest path properties. Three sections, each measuring 1 square mile, were sampled from the entire road network and developed into graphs using both a primal approach and graph theory in which the intersections and streets were represented as nodes and edges respectively. These graphs were assessed for the edge lengths and shortest paths between nodes from which their edge length distributions, average path lengths and efficiencies were also obtained. It was concluded that the city of Akure is self-organized with small world properties since the network case studies showed small path lengths.</p>

A network perspective on the calamity, induced inaccessibility of communities and the robustness of centralized, landbound relief efforts

2014 ◽  
Vol 25 (06) ◽  
pp. 1450047 ◽  
Author(s):  
Jesus Felix Valenzuela ◽  
Erika Fille Legara ◽  
Xiuju Fu ◽  
Rick Siow Mong Goh ◽  
Robert De Souza ◽  
...  
Keyword(s):  
Road Network ◽  
Road Networks ◽  
Scale Free Network ◽  
Scale Free ◽  
The Road ◽  
Disaster Relief Operations ◽  
Free Network ◽  
Relief Operations ◽  
Disaster Event ◽  
Relief Efforts

We examine the robustness of centralized, landbound relief operations' capability to promptly reach areas affected by a disaster event from a network perspective. We initially look at two idealized road networks: a two-dimensional grid and a scale-free network, and compare them to an actual road network obtained from OpenStreetMap. We show that, from a node designated as the center for relief operations (a "relief center"), damage to a road network causes a substantial fraction of the other nodes (about 20% in the three networks we examined) to become initially inaccessible from any relief effort, although the remaining majority can still be reached readily. Furthermore, we show the presence of a threshold in the two idealized road networks but not in the real one. Below this threshold, all nodes can robustly be reached in a short span of time, and above it, not only the partitioning mentioned above sets in, but also the time needed to reach the nodes becomes susceptible to the amount of damage sustained by the road network. Under damage sustained by random segments of the network, this threshold is higher in the scale-free network compared to the grid, due to the robustness of the former against random attacks. Our results may be of importance in formulating contingency plans for the logistics of disaster relief operations.

scholarly journals Analysis of Road Network Growth Patterns As Supporting System of Industrial Park Accessibility

2019 ◽  
Author(s):  
Yudo Prasetyo ◽  
Nurhadi Bashit ◽  
Dicky Nur Krisnha
Keyword(s):  
Road Network ◽  
Road Construction ◽  
Industrial Area ◽  
Growth Patterns ◽  
Industrial Park ◽  
Network Growth ◽  
Spatial Statistical Analysis ◽  
The Road ◽  
The North ◽  
Production And Distribution

Development growth around the industrial area has increased from year to year to meet the ideal industry criteria ranging from environmental, economic, physical and other aspects. Physical development affects accessibility so that it accelerates production and distribution by increasing the road network. Road network monitoring needs to be carried out to see its effect on the accessibility of industrial park. Therefore, this study analyzes the growth pattern of the road network as a support system for industrial area accessibility. This research was carried out in the Kendal Industrial Park in Kaliwungu, South Kaliwungu, and Brangsong Regencies. The research method uses the Remote Sensing method and Geographic Information System (GIS). Satellite imagery was digitalized on Worldview-2 (0.5 Meter) and SPOT-7 (1.5 Meter) satellite images with multitemporal 2010 and 2019. The digitization results were calculated on the total length of roads from 2010 to 2019. Road growth patterns were analyzed using spatial statistical analysis shown by Ellipse’s Standard Deviation. The growth of road net growth in Kendal Industrial Park from 2010 to 2019 is 45,645.392 meters or 45.645 kilometers. Road growth in the 3 sub-districts in the study area is heading north where in the north there is the Kendal Industrial Park which has a lot of road construction to support access to the Kendal Industrial Park or to other areas that are more effective and efficient.

ANALISIS PENGARUH PEMBANGUNAN JALAN LAYANG JANTI TERHADAP PERKEMBANGAN TATA RUANG KAWASAN JANTI STUDI KASUS : KAWASAN JANTI, DESA CATURTUNGGAL, KABUPATEN SLEMAN, D. I. YOGYAKARTA

2017 ◽  
Vol 11 (3) ◽  
pp. 255
Author(s):  
Jeky El Boru
Keyword(s):  
Road Network ◽  
Open Space ◽  
Qualitative Description ◽  
Analysis Method ◽  
Open Spaces ◽  
The Road ◽  
Before And After ◽  
Linkage Method ◽  
The Impact ◽  
Parking Place

Abstract: This research aims to analyze the impact of Janti Flyover Construction toward the growth of layout at Janti Urban Area, including structured space, open space, and linkage. Method used for data collecting are observation, air photograph monitoring, and interview, whereas the analysis method is qualitative description, which is the superimposed method of two layers, that are the layout condition before and after flyover construction. The result shows that the impact of Janti Flyover construction can be seen on building mass (solid), the increasing number of open spaces, including the road network, parking place, and park, whereas the relation between spaces, visually and structurally, can be seen on the growth of buildings which have new shapes and styles, therefore the performance of the overall building does not have a proportional shape. Considering Janti Street at the collective relation, its role is getting stronger as the main frame road network.Keywords: Flyover construction, layout changing, Janti AreaAbstrak: Penelitian ini bertujuan untuk menganalisis pengaruh pembangunan Jalan Layang Janti terhadap perkembangan tata ruang Kawasan Janti, meliputi ruang terbangun, ruang terbuka, serta hubungan antar ruang (“linkage”). Metode pengumpulan data dilakukan melalui observasi, pengamatan foto udara, dan wawancara; sedangkan metode analisis melalui deskripsi secara kualitatif yang berupa “superimposed method” dari dua lapisan kondisi lahan, yakni kondisi tata ruang sebelum dan sesudah pembangunan jalan layang. Hasil penelitian menunjukkan bahwa pengaruh pembangunan Jalan Layang Janti terdapat pada massa bangunan (“solid”), pertambahan ruang terbuka yang berupa jaringan jalan, parkir, dan taman; sedangkan pada hubungan antar ruang ̶ secara visual dan struktural ̶ yakni tumbuhnya bangunan dengan bentuk dan gaya baru, sehingga bentuk tampilan bangunan secara keseluruhan tidak proporsional. Pada hubungan kolektif, Jalan Janti semakin kuat perannya sebagai kerangka utama jaringan jalan.Kata kunci : Pembangunan jalan layang, tata ruang, Kawasan Janti

STUDY OF MOVEMENTS MOBILITY-IMPAIRED POPULATION GROUPS IN PEDESTRIAN ZONES OF THE STREET-ROAD NETWORK (in the example of city of Kiev)

2017 ◽  
Author(s):  
Oleksandra Cherednichenko ◽  
Keyword(s):  
European Union ◽  
Comparative Analysis ◽  
Road Network ◽  
Actual State ◽  
The European Union ◽  
Regulatory Requirements ◽  
Population Groups ◽  
The Road ◽  
Mobility Impaired

The results of the study of the main elements of unobstructed space are presented and the compliance of the actual state with the regulatory requirements of measures to ensure a safe, comfortable, accessible and informative pedestrian zone of the road network is analyzed. A comparative analysis of the main regulatory requirements for access ramps on the legislation of Ukraine and the European Union is carried out.

Sign in / Sign up

Export Citation Format

Share Document