Sökning: "road condition"

Visar resultat 1 - 5 av 73 avhandlingar innehållade orden road condition.

1. 1. Evaluation of Road Equipment with Emphasis on Condition Assessment

   Författare :Sven-Olof Lundkvist; Ulf Isacsson; Rolf Magnusson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Road equipment; Condition assessment; State-of-the-art; Mobile measurement; Road marking; Road sign; Post delineator; Traffic light; Street lighting; Civil engineering and architecture; Samhällsbyggnadsteknik och arkitektur;

   Sammanfattning : This doctoral thesis deals primarily with condition assessment of road equipment. The road equipment concept is defined by five main groups, road lighting, fences and barriers, vertical signs, horizontal signs and traffic signals, respectively. LÄS MER

3. 2. Efficient Winter Road Maintenance : A Study of Technical and Contractual Issues

   Författare :Adel Abdi; Hans Lind; Björn Birgisson; Lars Silver; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; climate; road climate and weather; road surface roughness; road friction; winter tyre; winter maintenance tools; RWIS; weather station; winter maintenance; contract type; road maintenance contract; winter maintenance contract; partnering; strategic alliance; public procurement; tender; incentives; bundling services; payment mechanism; remuneration models; Civil and Architectural Engineering; Byggvetenskap;

   Sammanfattning : Since ancient times, roads have tied people and cultures together. Roads have been createdwith the aim of facilitating trade and cultural exchange among different regions in the world. LÄS MER

4. 3. Automated Gravel Road Condition Assessment : A Case Study of Assessing Loose Gravel using Audio Data

   Författare :Nausheen Saeed; Moudud Alam; Roger G. Nyberg; Diala Jomaa; Mirka Kans; Högskolan Dalarna; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Gravel roads; road maintenance; convolutional neural network CNN ; SVM; decision trees; ensemble bagged trees; GoogLeNet; ResNet50; ResNet18; sound analysis;

   Sammanfattning : Gravel roads connect sparse populations and provide highways for agriculture and the transport of forest goods. Gravel roads are an economical choice where traffic volume is low. In Sweden, 21% of all public roads are state-owned gravel roads, covering over 20,200 km. LÄS MER

5. 4. On the establishment of a data-driven approach to gravel road maintenance

   Författare :Keegan Mbiyana; Mirka Kans; Lars Håkansson; Jaime Campos; Ramin Karim; Linnéuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gravel road; condition assessment; conceptual modelling; condition classification; data acquisition; data-driven methods; field experiment; literature review; maintenance; visual assessment; Maskinteknik; Mechanical Engineering;

   Sammanfattning : Gravel roads are essential for economic development as they facilitate the movement of people, transportation of goods and services, and promote cultural and social development. They typically connect sparsely populated rural areas to urban centres, providing essential access for residents and entrepreneurs. LÄS MER

7. 5. On rating of gravel roads

   Författare :Hossein Alzubaidi; KTH; []
   Nyckelord :Condition; classification; condition estimation; corrugations; deterioration; dust; frost damage; grading; gravel road; maintenance; objective measurement; potholes; rating; roughness; ruts; side drainage; subjective rating; surface drainage;

   Sammanfattning : .... LÄS MER