A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Speed Factors on Low -Volume Roads for Horizontal Curves and Tangents
Many studies on driver speed behavior are found in the scientific literature today, and various researchers have addressed roadway alignment consistency for travel safety in context with current operating speeds. Experimental analysis was conducted on low-volume roads in Southern Italy without spiral transition curves between geometric tangent and circular elements on the horizontal alignment. All selected roads are located in areas with level terrain and vertical grades less than 6%. This study will illustrate a methodology, widely employed in the literature, to evaluate at each circular curve transition segment length, the applicable deceleration and acceleration rates. These results were then used to develop four equations for speed prediction models on tangents and curves. These regression equations were developed using a traditional Ordinary-least-squares method involving speed values not surveyed in transition zones. The goal of this research study is to plot continuous speed profiles to illustrate complete driver speed behavior on twolane rural roads and to individualize critical roadway sections to improve driver safety.
Speed Factors on Low -Volume Roads for Horizontal Curves and Tangents
Many studies on driver speed behavior are found in the scientific literature today, and various researchers have addressed roadway alignment consistency for travel safety in context with current operating speeds. Experimental analysis was conducted on low-volume roads in Southern Italy without spiral transition curves between geometric tangent and circular elements on the horizontal alignment. All selected roads are located in areas with level terrain and vertical grades less than 6%. This study will illustrate a methodology, widely employed in the literature, to evaluate at each circular curve transition segment length, the applicable deceleration and acceleration rates. These results were then used to develop four equations for speed prediction models on tangents and curves. These regression equations were developed using a traditional Ordinary-least-squares method involving speed values not surveyed in transition zones. The goal of this research study is to plot continuous speed profiles to illustrate complete driver speed behavior on twolane rural roads and to individualize critical roadway sections to improve driver safety.
Speed Factors on Low -Volume Roads for Horizontal Curves and Tangents
Gianluca Dell’Acqua (author) / Francesca Russo (author)
2010
Article (Journal)
Electronic Resource
Unknown
Metadata by DOAJ is licensed under CC BY-SA 1.0
| British Library Online Contents | 2006
Speed Changes in the Vicinity of Horizontal Curves on Two-Lane Rural Roads
| Online Contents | 2007
Safety Evaluation of Horizontal Curves on Rural Undivided Roads
| British Library Online Contents | 2013
Signing and marking of substandard horizontal curves on rural roads
| British Library Conference Proceedings | 1998
| TIBKAT | 1993