NDLI: First-Order Reliability Analysis of Vehicle Safety in Highway Horizontal Curves

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Shin, Jaekwan Lee, Ikjin
Copyright Year	2013
Abstract	This study presents a reliability analysis of vehicle sideslip and rollover in highway horizontal curves, mainly focusing on exit ramps and interchanges. To accurately describe failure modes of a ground vehicle, analytic models for sideslip and rollover are derived considering nonlinear characteristics of vehicle behavior using the commercial software, TruckSim®, with high fidelity. Then, the probability of accident is evaluated using the First-Order Reliability Method (FORM). Furthermore, sensitivity functions of each failure mode are analytically derived to apply FORM. Numerical studies are conducted using a single-unit truck model. The results show that a truck is more likely to rollover than to slip at dry load. To propose practical application of the study, the reliability analysis for the minimum radius recommended by American Association of State Highway and Transportation Officials (AASHTO) at various speeds and bank angles is conducted. The reliability analysis of current design method shows that the method cannot provide the sufficient margin of safety against both of rollover and sideslip when there are deviations from assumed conditions, especially at low speed of vehicles.
Sponsorship	Design Engineering Division Computers and Information in Engineering Division
File Format	PDF
ISBN	9780791855898
DOI	10.1115/DETC2013-13139
Volume Number	Volume 3B: 39th Design Automation Conference
Conference Proceedings	ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2013-08-04
Publisher Place	Portland, Oregon, USA
Access Restriction	Subscribed
Subject Keyword	Horizontal curves Rollover First order reliability method (form) Roadway safety Reliability analysis Reliability Sideslip Event history analysis Highways Safety Vehicles
Content Type	Text
Resource Type	Article

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