Title :
Optimal freeway network control via route recommendation
Author :
Messmer, Albert ; Papageorgiou, Markos
Author_Institution :
Lehrstuhl fur Steuerungs- und Regelungstech., Tech. Univ. Munchen, Germany
fDate :
31 Aug-2 Sep 1994
Abstract :
An online control strategy for route diversion via variable message signs (VMS) in freeway networks is presented. The control task is formulated as a dynamic, nonlinear, discrete-time optimal control problem with constrained control variables and is solved at each control interval by gradient based search. The proposed search algorithm considers directly the binary nature of the control signals. As a prerequisite, a macroscopic state-space description of the network traffic dynamics is presented. Simulation results for route diversion in a complex real example network are provided
Keywords :
conjugate gradient methods; discrete time systems; nonlinear control systems; optimal control; road traffic; search problems; state-space methods; traffic control; constrained control variables; dynamic nonlinear discrete-time optimal control problem; gradient based search; macroscopic state-space description; network traffic dynamics; online control strategy; optimal freeway network control; route diversion; route recommendation; variable message signs; Communication system traffic control; Current measurement; Displays; Expert systems; Neural networks; Optimal control; Traffic control; Vehicles; Voice mail; Volume measurement;
Conference_Titel :
Vehicle Navigation and Information Systems Conference, 1994. Proceedings., 1994
Conference_Location :
Yokohama
Print_ISBN :
0-7803-2105-7
DOI :
10.1109/VNIS.1994.396823
