01551660

Component

The freeway weaving segment analysis procedures in the 2010 Highway Capacity Manual (HCM) represent a major departure from the previous edition in that they are more flexible. Through some qualitative and quantitative analysis experiments, this paper discovered and confirmed that there exist structural defects on the weaving speed predicted model of the 2010 HCM. The quantitative analysis showed the calculation error of weaving speed was as high as 40% and the average error was greater than 20%. The qualitative analysis showed that the predicted results of weaving flow speed were greater than the no weaving speed, which was not consistent with actual operation characteristics. This study supposed the defect attributed to the traffic flow rate was not considered as a parameter in the predicted model of weaving speed. A modified model has been proposed to make up for the defect. The model calibration and verification work followed shows that both the prediction accuracy and the character are better than the current models

This paper was sponsored by TRB committee AHB40 Highway Capacity and Quality of Service.

01550057

15-3744

English

14p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; References; Tables

Highway capacity; Mathematical models; Traffic flow rate; Traffic speed; Weaving sections

Highway Capacity Manual 2010

Highways; Planning and Forecasting; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2015 Paper #15-3744

TRIS, TRB, ATRI

Dec 30 2014 1:14PM