Traffic modeling is an abstraction of reality formulation in either conceptacle, physical or mathematical terms and used as mechanism for reproducing the operation of the real world system for analytical purposes. The best fitting and the most significant model that explained the speed density relationship for the roadway section is a linear model like (Green Shield) Model. This represents appropriate and flexible application model. It was been concluded that the linear formula (Vs = 95.962-1.2698*K), show the better correlation between traffic elements in the study area according to regression analysis due to coefficient of correlation (r = 0.9657) when comparing the model with other equations such as log, power and exponential. The study found that the maximum density (Km) = 38 veh/km/ln, according to maximum flow (qmax.) = 1824 veh/h, the maximum speed due to stable flow = 48 km/h, also data collection and analysis has been represented that as the speed decreases the traffic density (K) increases and traffic flow change from stable to unstable flow meanwhile the density change from (Km) to jam density (Kj) which it is equal (76) veh/km/ln. Through observations and data analysis, it was found that the vehicles appear at speed higher than those that have been deduced in Paragraph 3, resulting in many traffic accidents, especially, type (vehicle/pedestrian), this required efforts, studies, activate low and regulations as well as furnishing the roadway section with signs and signal in order to provide safe movement and crossing for pedestrians and road user.
Abdul Rudhai and Ahmed Al Kremy. Traffic Modeling for Hillah-Najaf Highway (Nader Intersection-Babylon
Main Gate Segment/Iraq).
DOI: https://doi.org/10.36478/jeasci.2018.9613.9617
URL: https://www.makhillpublications.co/view-article/1816-949x/jeasci.2018.9613.9617