Freeway operations, spatiotemporal-incident characteristics, and secondary-crash occurrence

Vlahogianni, EI; Karlaftis, MG; Golias, JC; Halkias, BM

dc.contributor.author	Vlahogianni, EI	en
dc.contributor.author	Karlaftis, MG	en
dc.contributor.author	Golias, JC	en
dc.contributor.author	Halkias, BM	en
dc.date.accessioned	2014-03-01T01:33:30Z
dc.date.available	2014-03-01T01:33:30Z
dc.date.issued	2010	en
dc.identifier.issn	0361-1981	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20456
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Transportation	en
dc.subject.classification	Transportation Science & Technology	en
dc.subject.other	Freeway operations	en
dc.subject.other	High-density	en
dc.subject.other	Incident duration	en
dc.subject.other	Probabilistic estimation	en
dc.subject.other	Secondary crash	en
dc.subject.other	Traffic characteristics	en
dc.subject.other	Traffic conditions	en
dc.subject.other	Bayesian networks	en
dc.subject.other	Inference engines	en
dc.subject.other	Highway accidents	en
dc.title	Freeway operations, spatiotemporal-incident characteristics, and secondary-crash occurrence	en
heal.type	journalArticle	en
heal.identifier.primary	10.3141/2178-01	en
heal.identifier.secondary	http://dx.doi.org/10.3141/2178-01	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Incidents are a major source of uncertainty in freeway operations. Secondary crashes are an important category of freeway incidents. Until now, secondary crashes have been assumed to occur at the boundary of high-density queues formed upstream of an initial crash. While much research has concentrated on the relationship between incident duration and secondary-crash likelihood, the incident's influence area is widely treated as independent of prevailing traffic conditions and incident characteristics. This paper extends research by developing a Bayesian network for the probabilistic estimation of different influence areas for secondary-crash occurrence with respect to various incident and traffic characteristics. Results indicate that traffic conditions at the time of an incident, as well as the time needed to respond to and clear the crash scene, are the most significant determinants in defining the upstream influence area of a crash.	en
heal.publisher	NATL ACAD SCIENCES	en
heal.journalName	Transportation Research Record	en
dc.identifier.doi	10.3141/2178-01	en
dc.identifier.isi	ISI:000287679600001	en
dc.identifier.issue	2178	en
dc.identifier.spage	1	en
dc.identifier.epage	9	en