A real-time traffic signal control system: Architecture, algorithms, and analysis

Pitu Mirchandani, Larry Head

Research output: Contribution to journalArticle

347 Scopus citations

Abstract

The paper discusses a real-time traffic-adaptive signal control system referred to as RHODES. The system takes as input detector data for real-time measurement of traffic flow, and "optimally" controls the flow through the network. The system utilizes a control architecture that (1) decomposes the traffic control problem into several subproblems that are interconnected in an hierarchical fashion, (2) predicts traffic flows at appropriate resolution levels (individual vehicles and platoons) to enable pro-active control, (3) allows various optimization modules for solving the hierarchical subproblems, and (4) utilizes a data structure and computer/communication approaches that allow for fast solution of the subproblems, so that each decision can be downloaded in the field appropriately within the given rolling time horizon of the corresponding subproblem. The RHODES architecture, algorithms, and its analysis are presented. Laboratory test results, based on implementation of RHODES on simulation models of actual scenarios, illustrate the effectiveness of the system.

Original languageEnglish (US)
Pages (from-to)415-432
Number of pages18
JournalTransportation Research Part C: Emerging Technologies
Volume9
Issue number6
DOIs
StatePublished - Dec 2001
Externally publishedYes

Keywords

  • Adaptive controls
  • Real time systems
  • Traffic controls
  • Traffic optimization

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Transportation
  • Computer Science Applications

Fingerprint Dive into the research topics of 'A real-time traffic signal control system: Architecture, algorithms, and analysis'. Together they form a unique fingerprint.

  • Cite this