Road construction and usage have a wide range of direct and indirect negative
effects on protected areas. The impact of state roads on protected areas in
Vojvodina was reviewed in this article, based ...on the orientation values of
habitat loss and secondary negative effects originating from traffic
functioning. Results of the assessment indicate that the use of existing
roads constructed on habitats within the national ecological network exceeded
the capacity of individual PA-protected areas (e.g., in case of Straza
Natural Monument). Recorded capacity overflow on other PAs occurs solely as a
consequence of overlapping between protected areas and areas of influence of
roads routed along the borders of protected areas (which is the case with
Slano Kopovo Special Nature Reserve and Selevenjske pustare Special Nature
Reserve). The aim of this article is to show that even with the smallest
values of the parameters related to the width of roads and critical distance
from the habitat, the vulnerability of certain core areas of the national
ecological network is evident.
nema
In recent years, the BIM method has been increasingly used in pilot projects for the planning and realization of road construction projects. Due to the strong political demand to expand the ...applications fields of BIM, there is also an increasing demand for a common data environment (CDE), as the central component of a successful and consistent BIM application 1. In this context, uniform requirements, which currently exist only to a limited extent, are necessary to implement and successfully use a CDE in road construction. Based on a qualitative research approach questioning employees of state road administrations and a market analysis conducted through a qualitative study with CDE suppliers, a specification book for further CDE usage in road construction is being provided. In this context, functional and non‐functional requirements must be complied in order to implement and use a CDE in road construction successfully. Future research needs to take an in‐depth look at the operational phase and the challenges that arise when most state road administrations implement a CDE area‐wide.
Abstract
Latvian State Road Development Strategy for 2020 – 2040 was approved in the year 2020. It is a vision that includes long-term perspectives, strategic goals, tasks and priorities for road ...network development, and it is created for more efficient planning of state road network development, as well as, attracting additional funding for state owned roads.
The aim of the Strategy 2040 is to create an efficient road network ensuring that the bypass of the Riga City is accessible within two hours from every national and regional development centre in Latvia. Development centres would be accessible within 45 minutes from every Latvian urban settlement along state regional and local roads.
The strategic task is to create sections of express roads in the total length of 1000 kilometres thus improving traffic safety and reducing the emissions of greenhouse gases.
When creating the Strategy 2040 both the changes in traffic and road use and the changes in the location of population were studied. The Strategy foresees that high-speed express road sections would connect the Riga City with the biggest cities. The proposed plan of road network development is created with the aim to cover as large a population as possible.
Special attention is paid to the Riga City, as it serves as the central hub for Latvian and Baltic transportation. After the implementation of the Strategy 2040, the Riga City would be reached within 30 minutes from the nearest development centres.
Purpose - The purpose of this paper is not only to gauge the extent of technical efficiency in 31 state road transport undertakings (SRTUs) operating in India but also to explore the most influential ...factors explaining its variations across SRTUs.Design methodology approach - Three popular data envelopment analysis (DEA) models, namely CCR, BCC and Andersen and Petersen's super-efficiency models, have been utilized to compute various efficiency scores for individual SRTUs. A censored Tobit analysis is conducted to see which factors significantly explain the inter-SRTU variations in efficiency.Findings - The key findings of the DEA analysis are only five SRTUs define the efficient frontier, and the remaining 26 inefficient undertakings have a scope of inputs reduction, albeit by the different magnitude; the extent of average overall technical inefficiency (OTIE) in these SRTUs is to the tune of 22.8 percent, indicating that the sample SRTUs are wasting about one-fourth of their resources in the production operations; managerial inefficiency (as captured by the pure technical inefficiency) is a relatively more dominant source of OTIE; and operation in the zone of increasing returns-to-scale is a common feature for most of the undertakings. The multivariate regression analysis using Tobit analysis highlights that the occupancy ratio is the most significant determinant for all the efficiency measures, and bears a positive relationship with overall technical, pure technical and scale efficiencies. Further, scale efficiency is also impacted positively by the staff productivity.Practical implications - The results of this paper can be applied from management's perspective. The managers can assess the relative efficiency of their SRTUs in the industry and take corrective measures to improve efficiency by altering input-output mix.Originality value - This paper provides more robust estimates of relative efficiency of the SRTUs and highlights the key determinants of overall technical efficiency.
Network Expansions in Kerala State Rtc P, Parthiban; Verghese, Vincy
International Research Journal of Multidisciplinary Technovation,
11/2019
Journal Article
Odprti dostop
The cornerstone of any great public transport organization is its expanding network of operations catering the passengers’ demand of all classes of people. Kerala State Road Transport Corporation is ...in the process of bringing inefficiency within the area of operations in the state and the expansion of its networks is an integral part of achieving it. The network expansion occurs with the introduction of new routes that can coordinate with the existing ones, thereby meeting the passenger demand of the state. The project attempts to recognize the new routes, feasible for the operations of Kerala State Road Transport Corporation. The project extension will be based on the current operational routes of Kerala State Road Transport Corporation and the distinguished potential routes. The project will consist of distinguishing the high-density private routes thereby analysing the nature of commuting in respect of age group, time and purpose of travel. The existing operational concerns will be addressed thereby identifying the routes of operation. Based on the demand assessment, bus operations and the conceivable revenue generations will be articulated
GIS for Public Lighting Installations Spica, Sanja; Celikovic, Milan; Popov, Srdan
2021 21st International Symposium on Power Electronics (Ee),
2021-Oct.-27
Conference Proceeding
This paper describes the practical realization of the Geographic Information System (GIS) on public lighting installation, exploiting and using geospatial data to achieve efficient operation and to ...manage lighting data and information while reducing planning and decision time and costs. GIS is used to organize geospatial data of the public lighting system on State Road IB 23 in the Republic of Serbia. The section of IB 23, Užice - Bela Zemlja is the part of the road which was recently reconstructed using modern lighting solutions, such as LED. The exact locations and characteristics of each individual luminaire on this 15 km long section of the road are used to create a GIS database. Adequate geospatial and technical data, organized in such a way may greatly improve maintenance planning, which will lead to much cost-effective and less time-consuming management of the public lighting installation system.
Stanje mostova neprestano mijenja se zbog različitih utjecaja, a opisuje se "koeficijentom vrednovanja stanja" koji se određuje na osnovu vizualnih pregleda. U radu je analizirano stanje mostova na ...slovenskim državnim cestama. Baza podataka koja se temelji na koeficijentu u obzir uzima prometno opterećenje, klimatske zone, konstrukcijske materijale, tip konstrukcije i elemente mosta. U obzir su uzete i promjene koeficijenta tijekom vremena. Rezultati analize pokazuju da su klimatski uvjeti i izloženost utjecajima vode i vlage najutjecajniji parametri koji utječu na stanje mostova. U radu su identificirani i izazovi povezani s metodologijom procjene stanja mostova, a provedena je i diskusija.
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