منابع مشابه
New geometric design consistency model based on operating speed profiles for road safety evaluation.
To assist in the on-going effort to reduce road fatalities as much as possible, this paper presents a new methodology to evaluate road safety in both the design and redesign stages of two-lane rural highways. This methodology is based on the analysis of road geometric design consistency, a value which will be a surrogate measure of the safety level of the two-lane rural road segment. The consis...
متن کاملeffect of geometric design parameters to improve safety and accidents reduction (case study: sari – kiasar corridor)
background and aim: traffic accident is one of the main causes of mortality in iran. the damage and injury caused by these accidents threatens human societies severely. rural accidents are often more severe and show harsher consequences because the operational speed is higher on rural roads and highways. world statistics presented by world health organization (who) reveal that about 25 percent ...
متن کاملGeometric design safety estimation based on tire–road side friction
A closed-loop drive–vehicle–road–environment system (DVRES) model was established using Adams/Car and Matlab/Simulink. Dynamic responses of lateral tire forces based on tire–road side friction and road geometric characteristics are used to investigate vehicle side slip for geometric design safety estimation. The root mean square, the maximum values of lateral tire forces, comfort limit on curve...
متن کاملsafety evaluation of highway geometric design criteria in horizontal curves at downgrades
the previous studies show that a high percentage of traffic accidents take place in two-lane rural highways and most of which happen at horizontal curves. meanwhile the horizontal alignment is often subject to hard topographic conditions where because of economic aspects designers are forced to design horizontal curves at grades. vertical angle of longitudinal slope reduces the normal force of ...
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ژورنال
عنوان ژورنال: Transportation Research Record: Journal of the Transportation Research Board
سال: 2012
ISSN: 0361-1981,2169-4052
DOI: 10.3141/2309-05