Optimising total entry delay at roundabouts with unbalanced flow: A dynamic strategy for smart metering
Artikel i vetenskaplig tidskrift, 2019

Modern roundabouts are widely used at intersections with light traffic, generally providing safety and other advantages. However, large entry delays are often observed at roundabouts with unbalanced flow patterns, even though the entry traffic flow is not high. A metering signal-based strategy is examined to mitigate the above problems. A mathematical optimisation model is formulated firstly with the objective of minimising the total entry delay, subject to the metering signal thresholds. Then a solution algorithm based on VISSIM simulation is developed. Finally, a case study is carried out to testify the feasibility and applicability of the proposed model. Extended scenarios analyses under different levels of approach volume, different demand combinations and different proportions of right-turn vehicles (left-side driving) are also conducted. Results show that the methodology can effectively improve the operational performance, and a delay reduction of up to 25.7% can.

Delay reduction

Optimization

Traffic control

Författare

Yuzhou Duan

Henan University of Technology

Xiaobo Qu

Chalmers, Arkitektur och samhällsbyggnadsteknik, Geologi och geoteknik

Said Easa

Ryerson University

Yadan Yan

Zhengzhou University

IET Intelligent Transport Systems

1751-956X (ISSN) 1751-9578 (eISSN)

Vol. 13 3 485-494

Ämneskategorier

Transportteknik och logistik

Farkostteknik

Reglerteknik

DOI

10.1049/iet-its.2018.5180

Mer information

Senast uppdaterat

2019-04-08