Operating Speed models for heavy vehicles on tangents of Spanish two-lane rural roads

التفاصيل البيبلوغرافية
العنوان: Operating Speed models for heavy vehicles on tangents of Spanish two-lane rural roads
المؤلفون: González, B., Llopis-Castelló, D., García, A
المساهمون: González, B., Llopis-Castelló, D., García, A
سنة النشر: 2019
المجموعة: Sapienza Università di Roma: CINECA IRIS
مصطلحات موضوعية: speed model, operating speed, truck, two-lane rural road, geometric design
الوصف: Road safety is one of the most important public health concern in our society. In Spain, the most of the traffic accidents involving a heavy vehicle occur on two-lane rural roads. Current consistency models only rely on the analysis of the operating speed profile for passenger cars due to the few speed models available for heavy vehicles. Therefore, the main objective of this research was to analyze and model the free flow speed developed by heavy vehicles on tangents of two-lane rural roads. Thus, this research presents new speed models for estimating heavy vehicle speeds on tangents of two-lane rural roads. To do this, truck speeds were collected by means of Global Positioning System tracking devices, on 49 tangents sections that were identified from 12 road sections. Two different patterns were detected, which were associated with loaded and unloaded trucks. The combined effect of geometric and operational variables was analyzed. As a result, the most influential variables on loaded truck speeds were the speed of the preceding horizontal curve and the grade of the tangent, whereas unloaded truck speeds were significantly influenced by the length of the tangent and the speed of the preceding horizontal curve. Finally, several regression models were calibrated to predict the 85th and 15th percentile speeds for both loaded and unloaded trucks.
نوع الوثيقة: conference object
اللغة: English
Relation: ispartofbook:98th Annual Meeting of Transportation Research Board; 98th Annual Meeting of Transportation Research Board; numberofpages:20; https://hdl.handle.net/11573/1321685
الاتاحة: https://hdl.handle.net/11573/1321685
Rights: info:eu-repo/semantics/openAccess
رقم الانضمام: edsbas.3A5A87BE
قاعدة البيانات: BASE