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The influence of lighting, wall colour and inattention on traffic safety in tunnels: a simulator study
Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.ORCID iD: 0000-0002-1849-9722
Swedish National Road and Transport Research Institute, Traffic and road users, Human-vehicle-transport system interaction.
2011 (English)Report (Other academic)
Abstract [sv]

Även om olycksrisken i tunnlar är lägre än på landsvägar kan skadeföljden bli allvarlig. Därför är detviktigt att säkerställa en hög säkerhet i tunnlar, vilket bland annat ställer krav på belysningen. Denna studie har syftat till att undersöka hur belysningsnivån och tunnelväggarnas ljushet påverkar beteendet hos uppmärksamma och mindre uppmärksamma förare. Studien genomfördes i VTI:s simulator III, som är en avancerad simulator med linjär rörelse i sidled. I studien deltog 24 försökspersoner, som alla fick köra samtliga kombinationer av belysningsnivå, tunnelväggar och distraktion. Belysningsstyrkan hade tre nivåer, medan tunnelväggarnas ljushet och graden av distraktion hade vardera två nivåer. Kördata, ögonrörelsedata och subjektiva data samlades in och analyserades både för en omkörningssituation och under fri körning. Ljusa tunnelväggar är viktigare för upplevd säkerhet och komfort än hög belysningsnivå så länge denna nivå är tillräcklig. Körbeteendet och ögonrörelserna påverkades starkt negativt av distraktion på så sätt att försökspersonerna körde mindre säkert då de tvingades lösa en sekundär uppgift. Ljusa väggarinnebar en något mindre mental belastning.

Abstract [en]

Even though the crash risk in tunnels is rather lower than on the open road network, crash consequences can be very severe. Therefore it is of high importance to assure high safety standard in tunnels, which includes, but is not limited to, an appropriate illumination. The aim of this study was to investigate in which way different levels of illumination and brightness of the tunnel walls influence the behaviour of attentive and inattentive drivers.

The study was conducted in the Simulator III at VTI, which is a high-fidelity simulator with linear motion in lateral direction. A within-subjects design was employed, and 24 participants took part in the tests. Illumination was varied on three levels and tunnel wall colour and driver attention were varied on two levels each. Driving data, eye tracking data and subjective data were collected and analysed for an overtaking event and for an event-free driving situation.

Bright walls were more important for experienced safety and comfort than high illumination level, as long as the illumination was sufficiently bright. Further, driving behaviour and gaze behaviour were heavily influenced by driver state, with distracted drivers showing more unsafe behaviour. Additionally, bright walls received slightly lower demand ratings than dark walls.

Place, publisher, year, edition, pages
Linköping: Statens väg- och transportforskningsinstitut, 2011. , 79 p.
Series
VTI rapport, ISSN 0347-6030 ; 724A
Keyword [en]
Tunnel, Lighting (street), Light intensity, Luminance, Driver, Behaviour, Eye movement, Attention, Mental load, Speed, Simulator (driving), Test
Keyword [sv]
Tunnlar, Väg- och gatubelysning, Ljusstyrka, Luminans, Förare, Beteende, Ögonrörelser, Uppmärksamhet, Mental belastning, Hastighet, Körsimulatorer, Test
National Category
Applied Psychology
Research subject
80 Road: Traffic safety and accidents, 841 Road: Road user behaviour; 30 Road: Highway design, 36 Road: Tunnels
Identifiers
URN: urn:nbn:se:vti:diva-6543OAI: oai:DiVA.org:vti-6543DiVA: diva2:675425
Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2014-10-03Bibliographically approved

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Kircher, KatjaLundkvist, Sven-Olof
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CiteExportLink to record
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