Safety evaluation process for two-lane rural roads: A 10-year review

Lamm, R; Psarianos, B; Cafiso, S

dc.contributor.author	Lamm, R	en
dc.contributor.author	Psarianos, B	en
dc.contributor.author	Cafiso, S	en
dc.date.accessioned	2014-03-01T01:18:19Z
dc.date.available	2014-03-01T01:18:19Z
dc.date.issued	2002	en
dc.identifier.issn	0361-1981	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14931
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0036942887&partnerID=40&md5=806262c17cf279abfe4f1ea30fb4d5c6	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Transportation	en
dc.subject.classification	Transportation Science & Technology	en
dc.subject.other	Accident prevention	en
dc.subject.other	Curves (road)	en
dc.subject.other	Highway engineering	en
dc.subject.other	Highway traffic control	en
dc.subject.other	Rural roads	en
dc.subject.other	Highway safety	en
dc.subject.other	Road networks	en
dc.subject.other	Traffic safety	en
dc.subject.other	Two lane rural roads	en
dc.subject.other	Highway accidents	en
dc.title	Safety evaluation process for two-lane rural roads: A 10-year review	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	A practical procedure was developed that explicitly considers the driving behavioral and safety rules of a horizontal alignment for the evaluation of roadway new designs; redesigns; and projects of rehabilitation, restoration, and resurfacing. Design classes were developed to classify, from a traffic safety point of view, roadway sections as good, fair, or poor; these design classes are associated with three safety criteria to develop an over-all quantitative safety evaluation procedure for two-lane rural roads. The safety criteria are introduced to analyze and evaluate by (a) Safety Criterion (SC) I: the difference between design speed and actual driving behavior as expressed by variations in observed 85th percentile speed; (b) SC II: the difference between observed 85th percentile speeds on successive design elements; and (c) SC III: the difference between side-friction assumed and side-friction demanded at the 85th percentile speed level on curves. Furthermore, the issues discussed include design speed, operating speed, sound tangential, and side-friction factors, as well as the application of tangents in the design process. A comparative analysis of the actual accident situation with the results of the safety criteria reveals a convincing agreement. Thus, the great advantage of the new concept is that as early as in the design stages, safety criteria can predict the endangerment (low, medium, and high) for new alignments or allow statements about the safety conditions of existing (old) roadway sections or whole road networks.	en
heal.publisher	TRANSPORTATION RESEARCH BOARD NATL RESEARCH COUNCIL	en
heal.journalName	Transportation Research Record	en
heal.bookName	TRANSPORTATION RESEARCH RECORD	en
dc.identifier.isi	ISI:000180586800006	en
dc.identifier.issue	1796	en
dc.identifier.spage	51	en
dc.identifier.epage	59	en