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New methods for improving winter road maintenence
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering.
2010 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Winter road maintenance activities are crucial for maintaining the accessibility and traffic safety of the road network during winters. Common winter road maintenance activities include plowing and the use of de-icing agents (e.g. NaCl) to avoid freezing. Effective winter road maintenance strives towards keeping the roads free from snow and ice while reducing negative side effects of winter road maintenance, such as ground water contamination from road salt. Since the weather is decisive for when there is an increased risk of slipperiness, the understanding and continuous observation and forecasts of the road weather are of highest importance. Sensors are commonly installed along roads to measure road weather conditions to support the road maintenance personnel in taking appropriate actions. Different types of errors and uncertainties related to sensors used for frost warnings along roads have been investigated by using a regional scale dataset from south-western Sweden. The results from this study indicate that various types of uncertainties originate from both measurements and models which have a significant impact on the winter road maintenance efficiency. To provide better information about the road surface conditions, a new method for detecting ice formation on roads is presented. Infrared sensors were used to detect temperature patterns which may occur when ice formation take place on a road surface. The investigations demonstrate the potential to improve winter road maintenance by introducing new methods to better describe the road surface conditions.

Place, publisher, year, edition, pages
Stockholm: KTH , 2010. , x, 13 p.
Series
Trita-LWR. LIC, ISSN 1650-8629 ; 2055
Keyword [en]
Winter road maintenance, Sensors, Infrared thermometry, Energy efficiency, De-icing salt
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-26926ISBN: 978-91-7415-833-5 (print)OAI: oai:DiVA.org:kth-26926DiVA: diva2:372930
Presentation
2010-12-20, Sal V3, KTH, Teknikringen 72, Stockholm, 13:15 (English)
Opponent
Supervisors
Note
QC 20101206Available from: 2010-12-06 Created: 2010-11-29 Last updated: 2010-12-06Bibliographically approved
List of papers
1. Energy savings by improved road frost warnings
Open this publication in new window or tab >>Energy savings by improved road frost warnings
(English)Manuscript (preprint) (Other academic)
National Category
Other Civil Engineering
Identifiers
urn:nbn:se:kth:diva-27030 (URN)
Note
QC 20101206Available from: 2010-12-06 Created: 2010-12-06 Last updated: 2010-12-06Bibliographically approved
2. Detection of road ice formation by high frequency infrared temperature measurements
Open this publication in new window or tab >>Detection of road ice formation by high frequency infrared temperature measurements
(English)Manuscript (preprint) (Other academic)
National Category
Other Civil Engineering
Identifiers
urn:nbn:se:kth:diva-27031 (URN)
Note
QC 20101206Available from: 2010-12-06 Created: 2010-12-06 Last updated: 2010-12-06Bibliographically approved

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fulltext(474 kB)440 downloads
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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
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Language
  • de-DE
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  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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  • asciidoc
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