نتایج جستجو برای: road maintenance

تعداد نتایج: 214886  

2014
Cheng Li Ivo M. Creusen Lykele B. Hazelhoff Peter H. N. de With

The detection of road lane markings has many practical applications, such as advanced driver assistance systems and road maintenance. In this paper we propose an algorithm to detect and recognize road lane markings from panoramic images. Our algorithm consists of four steps. First, an inverse perspective mapping is applied to the image, and the potential road markings are segmented based on the...

2012
Gianlorenzo D'Angelo Mattia D'Emidio Daniele Frigioni Camillo Vitale

The problem of finding best routes in road networks can be solved by applying Dijkstra’s shortest paths algorithm. Unfortunately, road networks deriving from real-world applications are huge yielding unsustainable times to compute shortest paths. For this reason, great research efforts have been done to accelerate Dijkstra’s algorithm on road networks. These efforts have led to the development ...

2015
M. Mosleh Uddin M. Kabir M. Mostafa Alam G. K. Boss

This study describes the Impact of rural maintenance programme on rural markets in Bangladesh. Rural Maintenance programme (RMP) is a year-round programme for maintenance ol 16 miles earthen roads In each selected union. The programme is run by crews consisting of 15 destitute women. The findings suggest that better road maintenance by RMP in the programme areas has resulted in more traffic f l...

Journal: :Int. J. Applied Earth Observation and Geoinformation 2014
Pankaj Kumar Conor P. McElhinney Paul Lewis Timothy McCarthy

Road markings are used to provide guidance and instruction to road users for safe and comfortable driving. Enabling rapid, cost-effective and comprehensive approaches to the maintenance of route networks can be greatly improved with detailed information about location, dimension and condition of road markings. Mobile Laser Scanning (MLS) systems provide new opportunities in terms of collecting ...

2015
Ju Qiu James Stoner Hosin Lee Guoli Wang

This thesis presents an application of Work Domain Analysis (WDA) to the domain of Winter Road Maintenance Operation (WRM). WDA is the first phase of Cognitive Work Analysis (CWA), a methodology for analyzing complex socio-technical systems. WDA can help to structure system information in a manner that is meaningful for decision making and computer-based information system design. The Abstracti...

Journal: :مهندسی عمران فردوسی 0
سعید غفارپور جهرمی نبی ا... احمدی شهرام وثوق علی خدایی

modified bituminous materials can bring real benefits to highway maintenance/construction, in terms of better and longer lasting roads, and savings in total road life castings. this paper present the effect of there novel modifier as precipitated calcium carbonate (pcc) and two type of nanoclay on rheological properties of bitumen binder. various blends of modifier and bitumen were selected and...

Highways and in particular their pavements are the fundamental components of the road network. They require continuous maintenance since they deteriorate due to changing traffic and environmental conditions. Monitoring methods and efficient pavement management systems are needed for optimizing maintenance operations. Pavement performance prediction models are useful tools for determining the op...

2002
C. C. Parkman K. B. Madelin R. Robinson T. Toole

This paper reviews experience of using the private sector for undertaking road maintenance in developing countries. It identifies the various organisational options for the client and supplier roles, key factors in establishing a competitive environment and building contract maintenance capacity, and the potential cost savings therefrom. It includes the following key messages: • The private sec...

2009
Jesus M. de la Garza Mehmet E. Ozbek

Reducing maintenance costs and providing timely improvement of transportation facilities are the major goals of public transportation agencies for the preservation of the existing infrastructure. Throughout the years, some agencies have not been able to accomplish these goals by using the traditional methods of preservation. As a result of this, such agencies considered privatization as an alte...

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