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Vägens sidoområde och sidoräcken
Swedish National Road and Transport Research Institute.
2000 (Swedish)Report (Other academic)Alternative title
The road side area and safety fences (English)
Abstract [sv]

Hur mycket man skadas vid en avkörningsolycka beror till stor del av vägens sidoområde. Sidoområdet studerades genom analyser och litteraturstudier.

Först studerades möjligheterna till analys av sidoområdets inverkan på avkörningsolyckor på vägar där sidoområdet skiftar. För att detta ska vara möjligt måste platsbestämningen av olyckor vara korrekt. En kontroll om platsbestämningen är tillräckligt god gjordes med hjälp av räckesolyckor på vägar där man visste var vägräckena var belägna. Platsbestämningen var inte tillräckligt god för att kunna användas.

Olyckskvoten och personolyckskvoten beräknades för avkörningsolyckor där vägräcke körts på samt där räcke inte körts på. Kvoterna är dubbelt så stora, eller större, för avkörningsolyckor utan påkörning av räcke.

Andelen jordskärning, andelen bank, andelen farligt sidoområde och skog/inte skog analyserades. Andelen bank, andelen farligt sidoområde och skog/inte skog visade sig vara signifikanta, skog/inte skog hade dock en så lite inverkan att den kan bortses från.

Tvära räckesavslutningar jämfördes med sluttande, ingen signifikant skillnad fanns. De som dött eller skadats svårt hade oftast inte gjort det på grund av att de kolliderat med avslutningen, utan att de även körde på något bakom räcket.

För att förhindra mötesolyckor är mitträcken/mittbarriärer bättre än bara en mittremsa. Breda mittremsor är bättre än smala.

Abstract [en]

The severity of injuries sustained in a run-off-road accident is largely determined by the roadside area. This area was studied through analyses and a review of the literature.

A study was first made of the possibility of analysing the influence of the roadside area on run-off-road accidents on roads where the roadside area varies. In order that this should be possible, the location of accidents must be correctly determined. A check on whether position fixing is good enough was made by studying accidents to road barriers where the location of these barriers was known. Position fixing was not sufficiently good to be usable.

The accident rate and the injury rate were calculated for run off the road accidents in which the road barrier had been hit and not hit. These rates are twice as large, or larger, for run-off-road accidents in which the road barrier had not been involved. The proportions of earth cuttings, embankments, hazardous roadside areas and forest/no forest were analysed.

The proportions of embankments, hazardous roadside areas and forest/no forest were found significant, although forest/no forest had such little influence that it can be ignored.

Rigid end terminals to safety fences were compared with terminals which sloped to underground anchorages, but no significant difference was found. In most cases, fatalities or severe injuries were not due to the fact that those concerned had collided with the end terminal, but that they also collided with something beyond the fence.

Central barriers are better for preventing head-on accidents than only central reserves. Wide central reserves are better than narrow ones.

Place, publisher, year, edition, pages
Linköping: Statens väg- och transportforskningsinstitut. , 2000. , 46 p.
Series
VTI rapport, ISSN 0347-6030 ; 453
Keyword [en]
Swedish, Sweden, Run off the road, Accident, Injury, Embankment, Slope, Ditch, Safety fence, Hazard, Tree, Location
Research subject
80 Road: Traffic safety and accidents, 812 Road: Collation of accident statistics; 30 Road: Highway design, 34 Road: Safety devices
Identifiers
URN: urn:nbn:se:vti:diva-1758OAI: oai:DiVA.org:vti-1758DiVA: diva2:670547
Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2017-02-10Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
  • ieee
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