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Åkkvalitet på vinterväg
Swedish National Road and Transport Research Institute, Infrastructure, Infrastructure maintenance.ORCID iD: 0000-0001-8975-0040
Swedish National Road and Transport Research Institute, Infrastructure, Infrastructure maintenance.ORCID iD: 0000-0002-9893-0067
Swedish National Road and Transport Research Institute, Infrastructure, Infrastructure maintenance.ORCID iD: 000-0002-2397-0769
Swedish National Road and Transport Research Institute, Society, environment and transport, Environment.
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2014 (Swedish)Report (Other academic)Alternative title
Travel comfort on winter roads (English)
Abstract [sv]

Denna VTI-studie konstaterar att det går att mäta ojämnheter på vinterväg på samma sätt som på barmarksväg. Både ojämnheter och buller vid låga frekvenser ökar vid visst vinterväglag och är kopplade till hastighet. De mätningar som utförts inom projektets ramar visar att det går utmärkt att utföra mätningar på en snöklädd yta. Med vinterväglag menas här en snöklädd väg cirka ett dygn efter ett kraftigt snöfall. Baserat på de vägar som mättes visar studien att ojämnheter i våglängdsintervallet 0,05 till 1 meter påverkas allra mest av vinterväglaget. Ojämnheterna ökar cirka 5 gånger i medeltal för hela testslingan från barmarks- till vinterförhållanden. Det går även att se att ytans struktur, som beskrivs av de kortaste våglängderna som undersöktes, <10 mm, blir slätare på den snöklädda ytan vilket var en av hypoteserna och som indikerar att mätningen är pålitlig. Kopplingen mellan buller och ojämnheter är relaterade till hastighet. Den största ljudskillnaden mellan vinter- och sommarväg var vid låga frekvenser. Det uppfattade ljudet i bilen var då mellan 3 och 6 decibel högre för körningen på vinterväg. I de mer högfrekventa områdena var skillnaden i ljudnivå tvärtom, lägre för vintervägen än för sommarvägen och en trolig orsak till detta kan vara att ljudet absorberas av snön.

Abstract [en]

What can be stated in this project is how a winter road is experienced when compared to snow free conditions, primarily with regard to unevenness and noise. Surveys carried out during the project show that it is possible, without too much difficulty, to measure the unevenness of a snow covered road surface. I this report is winter road defined as a snow covered road (around one day after heavy snowfall). Based on survey results, the study shows that the unevenness of section lengths between 0.05 metres and 1.0 metres are most affected by winter road conditions. Unevenness during winter road conditions is approximately five times greater than that experienced during snow free conditions. However, it is impossible to generalise for an entire road network as surface conditions during winter can be extremely variable. It is also possible to see that the surface structure described by the shortest wavelengths investigated, less than 10 millimetres, is smoother on the snow-covered surface. This is one hypothesis and indicates that measurements are reliable. The link between noise and unevenness is related to vehicle speed. The biggest sound difference between winter and summer road conditions, which could be related to the road surface measurements, was at the lower frequency range. Perceived in-car noise levels were between 3 and 6 decibel higher during winter conditions. However, for the higher frequency range the difference in noise levels was opposite - lower levels during winter conditions. A possible explanation for this is that sound may be absorbed by the snow.

Place, publisher, year, edition, pages
Linköping: Statens väg- och transportforskningsinstitut, 2014. , 36 p.
Series
VTI rapport, ISSN 0347-6030 ; 814
Keyword [en]
Snow, Winter, Carriageway, Evenness, Surface texture, Noise level, Comfort, Measurement, Method
National Category
Infrastructure Engineering
Research subject
Road: Maintenance, Road: Winter maintenance
Identifiers
URN: urn:nbn:se:vti:diva-6841OAI: oai:DiVA.org:vti-6841DiVA: diva2:709379
Available from: 2014-04-01 Created: 2014-04-01 Last updated: 2017-02-22Bibliographically approved

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Arvidsson, Anna K.Lundberg, ThomasSjögren, LeifGenell, Anders
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