Abstract
Abstract In this study a parameter called traffic acceleration noise along different approaches of some signalized intersections located within the Mousl City road network was measured. This parameter is usually defined as the root mean square of car acceleration. Approaches of two signalizedintersections having four legs were surveyed different times using digital camera to measure vehicle speed at the start of green light opening. Acceleration noise correlated with other signal parameters obtained out of the analysis of different phasing plans such as, saturation flow, v/c ratio, lane group volume .etc., level of service is obtained too. Outcomes out of this study are the development of a new scale measure for level of service depending on acceleration concept rather than approach delay concept as demonstrated by the Highway Capacity Manual Special Report 209 authorized methodology. Key Word: Noise, Mosul City
