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Piecewise Optimum Delay Estimation for Improved Signal Control Yi, Ping ; Shao, Chun ; Wang, Yinhai

Av: Medverkande: Serie: ; 2080Utgivningsinformation: Transportation Research Record: Journal of the Transportation Research Board, 2008Beskrivning: s. 57-66ISBN:
  • 9780309125932
Ämnen: Bibl.nr: VTI P8167:2080Location: Abstrakt: An adaptive control strategy called Piecewise Optimum Delay Estimation (PODE) was developed and tested. This paper reviews the advantages of the existing adaptive control strategies over the actuated control scheme and uses their limitations as the basis for improvement. By using real-time traffic as input, PODE dynamically searches movement combinations for phasing and timing decisions that minimize piecewise system delay. Preliminary results show that PODE can considerably and consistently reduce delay more than actuated control can. Supported by a self-adjusting procedure, PODE control logic has demonstrated its competitive strength among other adaptive control strategies, especially under congested and oversaturated conditions.
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An adaptive control strategy called Piecewise Optimum Delay Estimation (PODE) was developed and tested. This paper reviews the advantages of the existing adaptive control strategies over the actuated control scheme and uses their limitations as the basis for improvement. By using real-time traffic as input, PODE dynamically searches movement combinations for phasing and timing decisions that minimize piecewise system delay. Preliminary results show that PODE can considerably and consistently reduce delay more than actuated control can. Supported by a self-adjusting procedure, PODE control logic has demonstrated its competitive strength among other adaptive control strategies, especially under congested and oversaturated conditions.