scholarly journals The Winter Maintenance Optimization by Graph Theory

2018 ◽  
Vol 47 (2) ◽  
pp. 106-110
Author(s):  
Jiri Cejka ◽  
Rudolf Kampf
Keyword(s):  
Graph Theory ◽  
Present State ◽  
Maintenance Optimization ◽  
Road Maintenance ◽  
Chinese Postman Problem ◽  
Winter Maintenance ◽  
Chinese Postman ◽  
Winter Road ◽  
Winter Road Maintenance

The article is concerned with optimization of the winter maintenance of the selected stretch of roads within the Strakonice district by applying the graph theory. The graph theory and the Chinese postman problem are applied in case of the winter maintenance of the specific selected section of roads. The article also includes the evaluation of performing the winter road maintenance so far. The results of optimization are compared with the present state and economically evaluated at the end.

scholarly journals Payment mechanisms for winter road maintenance services

2013 ◽  
Vol 13 (4) ◽  
pp. 18-31 ◽  
Author(s):  
Adel Abdi ◽  
Hans Lind ◽  
Björn Birgisson
Keyword(s):  
Traffic Safety ◽  
Weather Data ◽  
Road Maintenance ◽  
Survey Analysis ◽  
Cost Overruns ◽  
Winter Maintenance ◽  
Annual Budget ◽  
Winter Road ◽  
Data Statistics ◽  
Winter Road Maintenance

In countries with severe winters a major part of the annual budget for road maintenance is allocated on performance of winter road maintenance tasks. Finding appropriate remuneration forms to compensate entrepreneurs for performed road measures during winter is not an easy task in order to minimise or eliminate disputes and satisfy both client organisations and contractors. On the other hand improper reimbursement models lead either to the client’s annual budget imbalance due to unnecessary cost overruns or affect contractor’s cash-flow. Such cases in turn affect just-in-time winter road maintenance and then traffic safety. To solve such problems, a number of countries in cold regions like Sweden have developed different remuneration models based more on weather data called Weather Index. Therefore the objective of this paper is to investigate and evaluate the payment models applied in Sweden. The study uses a number of approaches namely; domestic questionnaire survey, analysis of a number of contract documents, a series of meetings with the project managers and an international benchmarking. The study recognised four remuneration models for winter maintenance service of which one based on weather data statistics. The study reveals the payment model based on weather data statistics is only applied for the roads with higher traffic flow and the model generates most uncertainty.

scholarly journals Monitoring of The Impact of Road Salting On Spruce Forest Ecosystem In The Vicinity of The Highway D1 In The Bohemian-Moravian Highlands, Czech Republic

2021 ◽  
Author(s):  
Jitka Hegrová ◽  
Lubomír Prokeš ◽  
Petr Anděl ◽  
Martina Bucková ◽  
Vilma Jandová ◽  
...  
Keyword(s):  
Czech Republic ◽  
Sodium Concentration ◽  
Road Maintenance ◽  
Winter Maintenance ◽  
The Road ◽  
Close Proximity ◽  
Winter Road ◽  
The Impact ◽  
Winter Road Maintenance

Abstract Monitoring of pollution in the vicinity of roads connected to winter road maintenance is one of the important tools for optimising winter maintenance technology and reducing its environmental impact. The aim of this study was to determine the relationship between winter road maintenance and the increased concentration of sodium ion to characterize the harm caused by the de-icing agents on selected types of individual components grown in the Norway Spruce ecosystem. The model area is located in the immediate vicinity of the D1 motorway connecting Prague and Brno (Czech Republic), at 103rd kilometer. The area is thus exposed to long-term contamination from automobile transport and the monitoring was carried out for three consecutive years. A clear effect of the de-icing agents on conifers near the road has been demonstrated by the symptoms of salt damage visually observed in close proximity to the road (at a sampling distance of 5 m). The needles of these spruce trees also showed increased sodium concentrations, regardless of the age of the needles. The study also confirms that sodium accumulates in all selected components of the analysed ecosystem (moos, humus, soil). The sodium concentration has been found to decrease with increasing distance from the road for all of the components.

scholarly journals Salt Gradation Analysis for Winter Road Maintenance

2020 ◽  
Vol 6 (9) ◽  
pp. 1670-1683
Author(s):  
Leila Hashemian ◽  
Neeraj Saroj ◽  
Babak Mehran ◽  
Alireza Bayat
Keyword(s):  
Material Handling ◽  
International Association ◽  
Field Trials ◽  
Road Maintenance ◽  
Winter Maintenance ◽  
State Highway ◽  
The Us ◽  
Winter Road ◽  
Canadian Provinces ◽  
Winter Road Maintenance

This research investigates the salt gradation specifications adopted by different provincial or state highway departments in Canada and the US for winter road maintenance operations. To understand the type of used salt, its quantity, grain size distribution, application method and the level of satisfaction of the user, a questionnaire was prepared and sent to selected provincial/state highway departments in Canada and the US. The survey-based comparative analysis performed on the salt gradation in different jurisdictions showed that the salt gradation does not always fit in ASTM (American Society of the International Association for Testing and Materials) and BS (British Standard) standard curves. However, it was found that the gradation of coarse and fine salt used by most Canadian provinces follows ASTM I and the Finnish standards, respectively. Although the majority of jurisdictions surveyed in this study have specific requirements for gradation of the salt used in their winter maintenance operations, no laboratory tests or field trials have been conducted to investigate the effectiveness of a particular salt gradation for road winter maintenance operations. It was also found that salt gradation standards are compromised due to factors such as local availability of the material, purity of the available material, ease of material handling, ease of application, and the preference of private contractors for certain materials.

Modeling the Snow Deposit Process on the Highways in the Flowvision Software

2020 ◽  
pp. 72-83
Author(s):  
Т. В. Самодурова ◽  
О. В. Гладышева ◽  
Н. Ю. Алимова ◽  
Е. А. Бончева
Keyword(s):  
Hydrodynamic Model ◽  
Geometric Model ◽  
Information Resources ◽  
Road Maintenance ◽  
Snow Removal ◽  
Experimental Section ◽  
Deposit Modeling ◽  
Winter Road ◽  
Highway Embankment ◽  
Winter Road Maintenance

Постановка задачи. Рассмотрена задача моделирования отложения снега во время метелей на автомагистралях с барьерными ограждениями в программе FlowVision . Результаты. В качестве опытного участка рассмотрен участок автомагистрали, проходящий в насыпи. Создана геометрическая модель участка автомагистрали. Обоснованы информационные ресурсы для создания гидродинамической модели обтекания насыпи автомагистрали с барьерными ограждениями снеговетровым потоком во время метелей. Проведено моделирование процесса снегонакопления на опытном участке с использованием программного комплекса FlowVision во время метелей с различными параметрами. Выводы. Сделан вывод о возможности применения программного комплекса FlowVision для совершенствования методики назначения снегозащитных устройств и определения параметров снегоочистки при зимнем содержании автомобильных дорог. Statement of the problem. The problems of snow deposit modeling on the highways with crash barriers during blizzards in the FlowVision was discussed. Results. The highway section passing in the embankment as an experimental section has been considered. The geometric model of the highway section was created. The information resources for designing a hydrodynamic model of a snowflow stream of highway embankment with barriers during blizzard were identified. The modeling of the snow deposit process in the experimental section using the FlowVision software during blizzards with different parameters was carried out. Conclusions. It was concluded that it is possible to use the FlowVision software to improve the methodology for snow protection designing and determining snow removal parameters for winter road maintenance.

Integrated winter road maintenance management — New directions for cold regions research

2016 ◽  
Vol 121 ◽  
pp. 108-117 ◽  
Author(s):  
Ville Hinkka ◽  
Eetu Pilli-Sihvola ◽  
Heikki Mantsinen ◽  
Pekka Leviäkangas ◽  
Aki Aapaoja ◽  
...  
Keyword(s):  
Maintenance Management ◽  
Road Maintenance ◽  
Cold Regions ◽  
New Directions ◽  
Winter Road ◽  
Winter Road Maintenance

scholarly journals Assessment model of levels for winter road maintenance

2017 ◽  
Vol 12 (2) ◽  
pp. 127-134 ◽  
Author(s):  
Tomas Ratkevičius ◽  
Alfredas Laurinavičius
Keyword(s):  
Traffic Accidents ◽  
Assessment Model ◽  
Road Maintenance ◽  
The Road ◽  
Road Users ◽  
Foreign Countries ◽  
Winter Road ◽  
Winter Time ◽  
National Significance ◽  
Winter Road Maintenance

The limited funding for the road industry leads to economizing in the planning of road network maintenance, to identifying the appropriate priorities of the activities with the greatest benefit for the society. The level of maintenance is the direct assessment of the road operation and maintenance service provided to the road users; it directly affects the road maintenance and for road users costs the better is road maintenance, the road users incur the fewerexpenses and vice versa. Insufficient road maintenance in the winter time causes not only the danger of traffic accidents but also worsens the driving conditions, increases the fuel consumption, vehicle depreciation, transportation becomes more expensive. Many results of studies showed that the current choice of maintenance levels in the winter time taking into account only the road category and traffic volume does not ensure the indicators of the most advanced world countries and road functional purpose. The principle of the minimal expenses for the society should be the main criterion in identifying the optimal levels of winter road maintenance. The experience of Lithuania and foreign countries helped in creating the model of assessment of winter maintenance levels for Lithuanian roads of national significance, which can be applied in the other foreign countries as well. This model could be an effective tool for the selection of the optimal maintenance levels, which would economically substantiate the winter road maintenance strategy, that best corresponds to the needs of the society.

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