Derivatives of the performance index for the traffic model from TRANSYT

S. C. Wong

Transportation Research Part B: Methodological, 1995, vol. 29, issue 5, 303-327

Abstract: This paper forms a starting point for the investigation of phase-based optimisation of signal timings for area traffic control. A conventional performance index, which is a weighted combination of delays of stops, is evaluated by the traffic model from the well-known stage-based procedure TRANSYT, but is considered here as a function of phase-based control variables, start and duration of green phases. In the paper, approximate expressions for the derivatives of performance index with respect to phase-based control variables are derived. The contribution from upstream, downstream and further downstream links and platoon dispersion are taken into account. The derivatives calculated from the expressions are compared with those from numerical differentiation using a trial network from Leicestershire as an example to illustrate the effectiveness of the formulae.

Date: 1995
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/0191-2615(95)00012-3
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:transb:v:29:y:1995:i:5:p:303-327

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/supportfaq.cws_home/regional
https://shop.elsevie ... _01_ooc_1&version=01

Access Statistics for this article

Transportation Research Part B: Methodological is currently edited by Fred Mannering

More articles in Transportation Research Part B: Methodological from Elsevier
Bibliographic data for series maintained by Catherine Liu ().