Operational and Environmental Assessment of Weaving Section for Urban Roads: Case Study, Aljouf Region, KSA

The urban weaving sections are more complex due to the various disturbing elements within section, such as lane-change situations. These turbulences reduced road capacity and increased vehicle exhaust emissions. Highway Capacity Manual (HCM 2010) has a methodology for analysis of free highways; roads is not investigated in HCM. Therefore, main objective this research present systematic factors that could potentially affect emissions sections. include traffic volume, section length (WL), volume ratio (VR), percentage heavy vehicles (HV%). Two were selected Aljouf Region, KSA; Sakakah–Dumat Al-Jandal road. collected data used development microsimulation using VISSIM models. results indicated increasing caused decrease an increase It was discovered resulted capacity. However, beneficial reducing Finally, regression models developed estimation prediction based on ratio, resulting relatively high R2 values.