Highway Design and Safety Consequences: A Case Study of Interstate Highway Vertical Grades
المؤلفون المشاركون
Ghahari, S. A.
Tang, Zongxin
Chen, Sikai
Cheng, Jianchuan
Labi, Samuel
المصدر
Journal of Advanced Transportation
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-13، 13ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-06-27
دولة النشر
مصر
عدد الصفحات
13
التخصصات الرئيسية
الملخص EN
Vertical alignment, which includes vertical grades and lengths, is a critical aspect of highway design policy that influences safety.
A full understanding of the effect of vertical grade and segment length on highway safety can help agencies to evaluate or adjust their design policies regarding vertical alignment design features (grade and length).
For this reason, it is useful to assess the current relationships between design policy and safety performance.
To address this task, this paper uses data from interstate segments to first establish the relationship between these design features and safety.
Safety is expressed in terms of the three different levels of crash severity (fatal, injury, and property damage only).
In its analysis, the paper departs from the traditional univariate models (where each crash severity is modeled separately) and instead uses a seemingly unrelated negative binomial (SUNB) technique, a multivariate model that duly accounts for the unobserved shared effects between the different levels of crash severity.
In addition, the paper’s models duly recognize and account for the holistic nature of the grade and tangent length effects: the effect of the sum (interaction) of the vertical grade and length is different from the sum of their individual effects.
The paper investigates the relationships for rural and urban interstate highway segments.
Against the background of the developed models, the paper evaluates current design policies (specifications on vertical alignment grade and length) for similar classes of highways at a number of countries and presents a set of nomograms that feature lines representing points of equal safety performance.
These charts can be used by the highway agencies to evaluate and compare their current or possible future highway design policies.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Tang, Zongxin& Chen, Sikai& Cheng, Jianchuan& Ghahari, S. A.& Labi, Samuel. 2018. Highway Design and Safety Consequences: A Case Study of Interstate Highway Vertical Grades. Journal of Advanced Transportation،Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1180940
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Tang, Zongxin…[et al.]. Highway Design and Safety Consequences: A Case Study of Interstate Highway Vertical Grades. Journal of Advanced Transportation No. 2018 (2018), pp.1-13.
https://search.emarefa.net/detail/BIM-1180940
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Tang, Zongxin& Chen, Sikai& Cheng, Jianchuan& Ghahari, S. A.& Labi, Samuel. Highway Design and Safety Consequences: A Case Study of Interstate Highway Vertical Grades. Journal of Advanced Transportation. 2018. Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1180940
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1180940
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر