Rural Highway Design Consistency Evaluation Model

Design consistency assessment is a tool employed by designers to improve road safety. This study illustrates an investigation on two-lane rural roads in the Southern Italy without spiral horizontal transition curves to check a prediction consistency model. Two consistency measures were compared with the results in the scientific literature: the first was the area bounded by the speed profile and the average weighted speed; the second was the standard deviation of operating speeds for each segment. Combining these two measures by sensitivity analysis, a consistency model was developed by using results of a 2011 research project performing V85 prediction models.

[1]  Andrew P Tarko,et al.  Reconciling Speed Limits with Design Speeds , 2004 .

[2]  Raffaele Mauro,et al.  Speed Prediction Models for Sustainable Road Safety Management , 2011 .

[3]  Abishai Polus,et al.  Predicting Operating Speeds on Tangent Sections of Two-Lane Rural Highways , 2000 .

[4]  Lily Elefteriadou,et al.  Evaluating Horizontal Alignment Design Consistency of Two-Lane Rural Highways: Development of New Procedure , 2000 .

[5]  Gianluca Dell’Acqua,et al.  Safety Performance Functions for Low-Volume Roads , 2011 .

[6]  Gianluca Dell’Acqua,et al.  Road Performance Evaluation Using Geometric Consistency and Pavement Distress Data , 2011 .

[7]  Gianluca Dell’Acqua,et al.  Speed Factors on Low-Volume Roads for Horizontal Curves and Tangents , 2010 .

[8]  Pedro Jose Andueza.  MATHEMATICAL MODELS OF VEHICULAR SPEED ON MOUNTAIN ROADS , 2000 .

[9]  Michael P Pratt,et al.  Model for Predicting Speed along Horizontal Curves on Two-Lane Highways , 2009 .

[10]  Necati Kuloğlu,et al.  Investigation of a New Transition Curve , 2011 .

[11]  Eric Violette,et al.  Updating French Formulas for Operating Speeds on Horizontal Curves of Rural Two-Lane Highways , 2009 .

[12]  Yasser Hassan,et al.  Modeling Operating Speed and Speed Differential on Two-Lane Rural Roads , 2005 .

[13]  A. Polus,et al.  New Consistency Model for Rural Highways and Its Relationship to Safety , 2004 .

[14]  Moshe Hirsh.  PROBABILISTIC APPROACH TO CONSISTENCY IN GEOMETRIC DESIGN , 1987 .