Reference
A. Hegyi, B. De Schutter, and J. Hellendoorn, "Optimal coordination of variable
speed limits to suppress shock waves,"
Proceedings of the 7th
TRAIL Congress 2002 - TRAILblazing into the Future - Selected Papers
(
P. H. L. Bovy, ed.), Rotterdam,
The Netherlands, pp. 197-220, Nov. 2002.
Abstract
We present a model predictive control (MPC) approach to optimally coordinate
variable speed limits for highway traffic. A safety constraint is formulated
that prevents drivers from encountering speed limit drops larger than, say, 10
km/h is incorporated in the controller. The control objective is to minimize
the total time that vehicles spend in the network. This approach results in
dynamic speed limits that reduce or eliminate shock waves. For the prediction
of the evolution of the traffic flows in the network, which is needed for MPC,
we use an adapted version of the METANET model that takes the variable speed
limits into account. The performance of the discrete-valued and safety
constrained controllers is compared with the performance of the
continuous-valued unconstrained controller. It is found that both types of
controllers result in a network with less congestion, a higher outflow, and a
lower total time spent. For our benchmark problem, the performance of the
discrete controller with safety constraints is comparable to the continuous
controller without constraints.
Downloads
BibTeX
@inproceedings{HegDeS:02-013,
author = {Hegyi, Andreas and De Schutter, Bart and Hellendoorn,
Johannes},
title = {Optimal Coordination of Variable Speed Limits to Suppress Shock
Waves},
booktitle = {Proceedings of the 7th TRAIL Congress 2002 -- TRAILblazing into
the Future -- Selected Papers},
editor = {Bovy, Piet H. L.},
address = {Rotterdam, The Netherlands},
pages = {197--220},
month = nov,
year = {2002}
}