Speed Policies and Guidelines For The Urban Roadway Network in Al-Ramadi City

Authors : Mahdi İ Thamer ALKUBAİSİ

Pages : 0-0

View : 15 | Download : 10

Publication Date : 2013-11-01

Article Type : Research Paper

Abstract :This paper represents a Free-flow speed insert ignore into journalissuearticles values(FFS); parameter that is being used extensively for capacity  and level-of-service analysis of various types of highway facilities. As a first effort in the trial of developing  local highway standards and guidance for Ramadi city, this study collects and analyzes FFS data at eight  roadways in Ramadi city. The objectives of this study are to develop models for estimating average FFS and  to set posted speed limit designations. The obtained models reflect the most important variables that govern the  FFS,which includevehicle type, speed limit, and shoulder type. A regression model was also developed to  predict the relationship between the average running speed insert ignore into journalissuearticles values(ARS); and the traffic volume. The proposed value  of a posted speed limit wasfound to be 80km/h, while the recommended design speed for the Al-Ramadi  network is 90km/h.
Keywords : Free flow speed, speed limit, design speed, guidelines