Studying the Relationship Between Horizontal Curves and Speed on Two-way Rural Roads

Authors

  • Hiba Daghmah

Keywords:

Two-way Rural Roads- Engineering Characteristics of the Road - Horizontal Curves - Speed - Sight Distance

Abstract

Horizontal curves are one of the main elements in the design of the horizontal path of the road, which greatly affects the speed, especially on rural roads where there are lots of curves abound. The vehicle's operating speed on the curves depends on many factors such as longitudinal grade, radius, sight distance etc. In the current study, a mathematical model was developed to calculate the speed on the horizontal curves of two-way rural roads, using data collected from more than 80 horizontal curves on the Tartous - Sheikh Badr road. We analyzed these data and performed a multiple regression analysis to study the effect of curve radius, sight distance and superelevation on the speed of the vehicles. The results showed a significant effect of the horizontal curve radius and sight distance on the vehicle speed. The proposed model for estimating the speed gave good correlation with field data, and it was recommended to use the developed model for estimating speed on horizontal curves of two-way rural roads, in addition to its application in designing these curves

Published

2020-10-01

How to Cite

1.
Daghmah H. Studying the Relationship Between Horizontal Curves and Speed on Two-way Rural Roads. Engineering Sciences Series [Internet]. 2020Oct.1 [cited 2021Jan.24];42(4). Available from: http://journal.tishreen.edu.sy/index.php/engscnc/article/view/9912