Passing Behavior on Rural Two-Lane Highways

Passing Behavior on Rural Two-Lane HighwaysAyman A. Abdul-Mawjoud Gandhi G. SofiaCollege of Engineering College of EngineeringUniversity of Mosul-Iraq University of Al-Mustansriya-IraqAbstractPassing on rural two-lane highways is one of the most important driving tasks.More than 28000 vehicles were observed and the passing maneuvers were recorded of 10two-lane highways in northern Iraq during June and July months of 2005. It was foundthat the number of passing maneuver increase as the flow rate for both directionsincrease up to 1500 veh/hr flow rate. The passing maneuvers decreases with the increasein flow rate. The increase in flow rate causes an increase in demand of passing anddecrease in passing supply. Volume of around 212 veh/hr gives a balance betweendemand of passing and passing supply.Keywords: flow rate, passing maneuvers, rural highway, two-lane highway. . . / . 00222 0222 . 0222 /, , . 000 / . : , , , .