A Model for Predicting of Weaving and Non-Weaving Lane- Changing Rates in Weaving Sections of Tehran Principal Arterials

Lane changing in the weaving makes a type of turbulence in traffic flow and the consequently the speed and the capacity of the weaving section is decreased. Due to lack of the manual for urban principal arterials, calibration of these models is necessary for our country. One of these models that are used to evaluate the level of service of the weaving sections is lane-changing rates model which will be developed in this paper. Thus, data of the traffic flow and lane-changing rates have been collected in 9 principal arterials of Tehran. Then, two models for prediction of weaving and nonweaving lane-changing rates are developed. Validations also confirm the accuracy of the developed models. The investigation of weaving lane-changing rates reveal that lane-changing rates increase by increasing length, lane number, the ratio of weaving flow rate to total flow rate, and interchange and intersection density.