00822752

Component

https://doi.org/10.3141/1774-01

http://scholar.google.com...inen&publication_year=2001

The development of an infrastructure for multiple autonomous agents, with an application to urban traffic signal control, is described. The agent-based infrastructure, Cybele, allows for distributed computing, interagent communication, agent migration, and computational resource allocation. The agents that are used to solve the traffic signal control problem are known collectively as DAARTS (Decentralized Adaptive Agents for contRol of Traffic Signals). DAARTS adopts a hierarchical multiagent-based architecture in which the lowest level (intersection agents) involves individual intersection-traffic dynamics and phase selection based on "local" information, while higher levels take into account the supervisory (network-level) dynamics. The controller design is based on a receding-horizon model predictive control approach. Coordination between intersections is achieved in a decentralized manner at the lowest level. The agents are integrated into a simulation test bed with the microsimulator CORSIM, using the DAARTS simulation tool kit. This kit enables communications between the CORSIM real-time extension, the communications management functions of Cybele, and the traffic control agents. The control process is truly distributed, and each of these components can reside on a different computer. Descriptions of all of the software components are given, and the control algorithm is discussed in detail. Some encouraging results from the simulation of a small network are included. Ongoing and future research activities are discussed.

This paper appears in Transportation Research Record No. 1774, Artificial Intelligence and Intelligent Transportation Systems.

English

p. 1-10

2001

Transportation Research Record

0309072352

Figures (8) ; References (22)

Adaptive control; Algorithms; Decentralization; Future; Research; System architecture; Traffic signal control systems

CORSIM (Traffic simulation model); Cybele (Computer infrastructure)

Highways; Operations and Traffic Management; Research; I73: Traffic Control

TRIS, TRB, ATRI

Jan 29 2002 12:00AM

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