QRA model -based risk impact analysis of traffic flow in urban road tunnels

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<dc:creator>Meng, Qiang</dc:creator>
<dc:date>2011-12-01</dc:date>
<dc:description xml:lang="es">Sumario: Road tunnels are vital infrastructures providing underground vehicular passageways for commuters and motorists. Various quantitative risk assessment (QRA) models have recently been developed and employed  to evaluate the safety levels of road tunnels in terms of societal risk (as measured by the F/N curve). For a particular road tunnel, traffic volume and proportion of heavy goods vehicles (HGVs) are two adjustable parameters that may significantly affect the societal risk, and are thus very useful in implementing risk reduction solutions.
To evaluate the impact the two contributing factors have on the risk, this article first presents an approach that employs a QRA model to generate societal risk for a series of possible combinations of the two factors. Some combinations may result in F/N curves that do not fulfill a predetermined safety target. This article thus proposes an excess risk index in order to quantify the road tunnel risk magnitudes that do not pass the safety target. The twofactor impact analysis can be illustrated by a contour chart based on the excess risk. Finally, the methodology has been applied to Singapores KPE road tunnel and the results show  that in terms of meeting the test safety target for societal risk, the traffic capacity of the tunnel should be no more than 1,200 vehs/h/lane, with a maximum proportion of 18% HGVs </dc:description>
<dc:identifier>https://documentacion.fundacionmapfre.org/documentacion/publico/es/bib/135592.do</dc:identifier>
<dc:language>eng</dc:language>
<dc:rights xml:lang="es">InC - http://rightsstatements.org/vocab/InC/1.0/</dc:rights>
<dc:subject xml:lang="es">Gerencia de riesgos</dc:subject>
<dc:subject xml:lang="es">Evaluación de riesgos</dc:subject>
<dc:subject xml:lang="es">Túneles</dc:subject>
<dc:subject xml:lang="es">Análisis de riesgos</dc:subject>
<dc:subject xml:lang="es">Índices estadísticos de accidentabilidad</dc:subject>
<dc:type xml:lang="es">Artículos y capítulos</dc:type>
<dc:title xml:lang="es">QRA model -based risk impact analysis of traffic flow in urban road tunnels</dc:title>
<dc:relation xml:lang="es">En: Risk analysis : an international journal. - McLean, Virginia : Society for Risk Analysis, 1987-2015 = ISSN 0272-4332. - 01/12/2011 Tomo 31 Número 12  - 2011 , p. 1872-1882</dc:relation>
</rdf:Description>
</rdf:RDF>