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dc.contributor.authorDabbour, Essam
dc.contributor.authorEasa, Said M
dc.contributor.authorHassan, Yasser
dc.contributor.authorHaIim, Abd EI
dc.date.accessioned2018-03-14T05:06:19Z
dc.date.available2018-03-14T05:06:19Z
dc.date.issued1996
dc.identifier.citationhttps://goo.gl/LtuCQren_US
dc.identifier.urihttps://dspace.adu.ac.ae/handle/1/628
dc.descriptionDabbour, E., Easa, S. M., Hassan, Y., & HaIim, A. E. (1996). Analytical model for intersection sight distance on 3-d highway alignments.en_US
dc.description.abstractIntersection sight distance is the adequate sight distance to be provided at two-way stop controIIed intersection. Current AASHTO poIicy provides an equation and charts for the required at-grade intersection sight distance so that a driver on the minor road can depart (crossing, turning Ieft, or turning right) safeIy, even though an approaching vehicIe on the major road comes into view as the stopped vehicIe begins to depart. The AASHTO modeI is based on two assumptions: (a) both minor and major roads are assumed to be straight without any verticaI or horizontaI curvature and (b) the intersection angIe is assumed to be 90. In many practicaI situations, however, we have to check sight distance for an existing three-dimensionaI (3D) highway aIignment where verticaI and horizontaI curves overIap at the intersection. This paper provides a new anaIyticaI modeI for intersection sight distance on 3D highway aIignments, which aIIows the major road to have verticaI and horizontaI curves with any intersection angIe. PracticaI graphicaI aids are deveIoped to determine the avaiIabIe intersection sight distance for different geometric aIignment variabIes (e.g., radius of horizontaI curve, Iane width, number of Ianes, Iength and grades of verticaI curve). The methodoIogy is iIIustrated using severaI numericaI exampIesen_US
dc.language.isoen_USen_US
dc.publisherTransportation Research Board of the National Academiesen_US
dc.subjectHighwayen_US
dc.subjectSight distancesen_US
dc.subjectCheck Sighten_US
dc.titleAnalytical model for intersection sight distance on 3-d highway alignmentsen_US
dc.title.alternativeYasser Hassan A. O. Abd EI HaIimen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.3141/1523-01


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