01154530

Component

This study presents an arterial signal optimization model that is capable of capturing the queue blockage between intersection lane groups during oversaturated conditions. The proposed model is grounded on the original cell transmission concept proposed by Daganzo, but enhanced with a new diverging cell for formulating the complex interactions of queue spillback between left-turn and through traffic flows. With the embedded formulations for forward wave, backward wave, and the horizontal queue, the proposed arterial signal optimization model can yield effective signal plans for both saturated and under-saturated intersections. To evaluate the performance of the proposed model, this study has conducted extensive simulation experiments with a segment of Georgia Avenue connected directly to Capital beltway in Maryland. The analysis results in comparison with the signal plans from TRANSYT-7F (Release 10) have demonstrated the promising properties of the proposed model.

01147878

10-2330

English

19p

2010

Transportation Research Board 89th Annual Meeting

DVD

Figures (5) ; References (33) ; Tables (4)

Arterial highways; Highway operations; Traffic flow; Traffic oversaturation; Traffic queuing; Traffic signal timing; Traffic simulation

Capital Beltway

Cell transmission models; Spillback effects (Traffic)

Maryland

Highways; Operations and Traffic Management; I73: Traffic Control

Transportation Research Board Annual Meeting 2010 Paper #10-2330

TRIS, TRB

Jan 25 2010 11:04AM