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dc.contributor.authorElvik, Rune
dc.coverage.spatialNorwaynb_NO
dc.date.accessioned2019-06-28T08:25:45Z
dc.date.available2019-06-28T08:25:45Z
dc.date.created2013-06-16T22:17:17Z
dc.date.issued2013-01-31
dc.identifier.citationSafety Science. 2013, 55 (June), 10-16.nb_NO
dc.identifier.issn0925-7535
dc.identifier.urihttp://hdl.handle.net/11250/2602725
dc.description.abstractStarting in the winter of 2004–2005, a temporary speed limit of 60 km/h (ordinary speed limit: 80 km/h) was introduced on one of the major arterial roads in the city of Oslo, Norway as a measure to reduce air pollution, in particular the spread of micro-particles torn from the road surface by studded tyres. The speed limit, referred to as an environmental speed limit, was in force from November 1 to March 31. Similar speed limits were later introduced on other arterial roads in Oslo. This paper presents a before-and-after study of the effects of these speed limits on accidents. Four study designs were employed: (1) A simple before–after study; (2) A before–after study using the rest of Oslo as comparison group; (3) A before–after study based on accident rates; (4) An empirical Bayes before–after study. The latter design is widely regarded as the best, but its implementation in the current study was not straightforward. The number of injury accidents was reduced by about 25–35% according to all study designs. The estimate of effect did not differ much between the different study designs. It is reasonable to rule out confounding by chance variation, long-term trends, changes in traffic volume and regression-to-the-mean. It cannot be claimed, however, that the entire accident reduction was attributable to the environmental speed limits exclusively.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleA before-after study of the effects on safety of environmental speed limits in the city of Oslo, Norwaynb_NO
dc.title.alternativeA before-after study of the effects on safety of environmental speed limits in the city of Oslo, Norwaynb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.rights.holder© 2013 Elsevier Ltd. All rights reserved.nb_NO
dc.description.versionsubmittedVersionnb_NO
cristin.unitcode7482,0,0,0
cristin.unitnameTransportøkonomisk institutt
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode1
dc.identifier.doi10.1016/j.ssci.2012.12.007
dc.identifier.cristin1034497
dc.source.journalSafety Sciencenb_NO
dc.source.volume55nb_NO
dc.source.issueJunenb_NO
dc.source.pagenumber10-16nb_NO
dc.relation.projectNorges forskningsråd: 208437nb_NO


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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