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dc.contributor.authorElvik, Rune
dc.contributor.authorUlstein, Heidi
dc.contributor.authorWifstad, Kristina
dc.contributor.authorSyrstad, Ragnhild S
dc.contributor.authorSeeberg, Aase R
dc.contributor.authorGulbrandsen, Magnus U
dc.contributor.authorWelde, Morten
dc.date.accessioned2019-07-05T11:24:15Z
dc.date.available2019-07-05T11:24:15Z
dc.date.created2017-10-24T13:08:52Z
dc.date.issued2017
dc.identifier.citationAccident Analysis and Prevention. 2017, 108 (November), 285-296.nb_NO
dc.identifier.issn0001-4575
dc.identifier.urihttp://hdl.handle.net/11250/2603631
dc.description.abstractThis paper presents an Empirical Bayes before-after evaluation of the road safety effects of a new motorway (freeway) in Østfold county, Norway. The before-period was 1996–2002. The after-period was 2009–2015. The road was rebuilt from an undivided two-lane road into a divided four-lane road. The number of killed or seriously injured road users was reduced by 75 percent, controlling for (downward) long-term trends and regression-to-the-mean (statistically significant at the 5 percent level; recorded numbers 71 before, 11 after). There were small changes in the number of injury accidents (185 before, 123 after; net effect −3%) and the number of slightly injured road users (403 before 279 after; net effect +5%). Motorways appear to mainly reduce injury severity, not the number of accidents. The paper discusses challenges in implementing the Empirical Bayes design when less than ideal data are available.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.titleAn Empirical Bayes before-after evaluation of road safety effects of a new motorway in Norwaynb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber285-296nb_NO
dc.source.volume108nb_NO
dc.source.journalAccident Analysis and Preventionnb_NO
dc.source.issueNovembernb_NO
dc.identifier.doi10.1016/j.aap.2017.09.014
dc.identifier.cristin1507224
dc.description.localcode© 2017. This is the authors’ accepted and refereed manuscript to the article. Locked until 19.9.2020 due to copyright restrictions. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/nb_NO
cristin.unitcode194,64,91,0
cristin.unitnameInstitutt for bygg- og miljøteknikk
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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