Safety impact of application of auxiliary lanes at downstream locations of Thai U-turns

  • To assess the safety impact of auxiliary lanes at downstream locations of U-turns, the Traffic Conflict Technique was used. On the basis of the installed components at those locations, four types of U-turns were identified: those without any auxiliary lane, those with an acceleration lane, those with outer widening, and those with both an acceleration lane and outer widening. The available crashTo assess the safety impact of auxiliary lanes at downstream locations of U-turns, the Traffic Conflict Technique was used. On the basis of the installed components at those locations, four types of U-turns were identified: those without any auxiliary lane, those with an acceleration lane, those with outer widening, and those with both an acceleration lane and outer widening. The available crash data is unreliable, therefore to assess the level of road safety, Conflict Indexes were formulated to put more emphasis on severe crashes than on slight ones by using two types of weighting coefficients. The first coefficient was based on the subjective assessment of the seriousness of the conflict situation and the second was based on the relative speed and angle between conflicting streams. A comparatively higher Conflict Index value represents a lower level of road safety. According to the results, a lower level of road safety occurs if two components apply or if a location is without any auxiliary lane. The highest level of road safety occurs if the layout includes only a single component, either an acceleration lane or outer widening.show moreshow less

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Metadaten
Document Type:Article
Author: Inder P. Meel, Ulrich Brannolte, Dussadee Satirasetthavee, Kunnawee Kanitpong
DOI (Cite-Link):https://doi.org/10.1016/j.iatssr.2016.06.002Cite-Link
URN (Cite-Link):https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20170401-31016Cite-Link
URL:http://www.sciencedirect.com/science/article/pii/S0386111216300140
Parent Title (German):IATSS Research
Language:English
Date of Publication (online):2017/04/01
Year of first Publication:2016
Release Date:2017/04/01
Publishing Institution:Bauhaus-Universität Weimar
Institutes and partner institutions:Fakultät Bauingenieurwesen / Professur Verkehrsplanung und Verkehrstechnik
Tag:Auxiliary lane; Conflict Indexes; Road safety; Traffic Conflict Technique; U-turn
GND Keyword:Verkehrssicherheit; Beschleunigungsstreifen
Dewey Decimal Classification:600 Technik, Medizin, angewandte Wissenschaften / 620 Ingenieurwissenschaften
BKL-Classification:55 Verkehrstechnik, Verkehrswesen / 55.84 Straßenverkehr
Licence (German):License Logo Creative Commons 4.0 - Namensnennung-Nicht kommerziell-Keine Bearbeitung (CC BY-NC-ND 4.0)