Optimal Coordination of Variable Speed Limits to Suppress Shock Waves
- Addendum
Reference
A. Hegyi,
B. De Schutter, and
J. Hellendoorn,
"Optimal Coordination of Variable Speed Limits to Suppress Shock Waves
- Addendum," Tech. report CSE02-015a, Control Systems Engineering,
Fac. of Information Technology and Systems, Delft University of
Technology, Delft, The Netherlands, 4 pp., Mar. 2003.
Abstract
The purpose of this document is to give a more detailed explanation
of the performance degradation as described in the paper "Optimal
coordination of variable speed limits to suppress shock waves" (by A.
Hegyi, B. De Schutter, and J. Hellendoorn, Transportation Research Record, no. 1852, pp.
167-174, 2004). For the simulation settings in that paper the
degradation occurs for the "floor" type of rounding of the real-valued
control signal (resulting from the MPC optimization), but does not
occur for "round" and "ceil" types of rounding. In this document we
show and explain that if the discrete-valued speed limit step size is
increased, the degradation occurs in all cases, but for the floor type
of rounding first.
Downloads
Original paper
- A. Hegyi, B. De Schutter, and J. Hellendoorn, "Optimal Coordination of Variable
Speed Limits to Suppress Shock Waves," Transportation Research
Record, no. 1852, pp. 167-174, 2003. (online paper, abstract, bibtex, tech. report
(pdf))
Bibtex entry
@techreport{HegDeS:02-015a,
author={A. Hegyi and B. {D}e Schutter and J. Hellendoorn},
title={Optimal Coordination of Variable Speed Limits to Suppress Shock Waves --
{A}ddendum},
number={CSE02-015a},
institution={Control Systems Engineering, Fac.\ of Information Technology and
Systems, Delft University of Technology},
address={Delft, The Netherlands},
month=mar,
year={2003}
}
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Last update: February 21, 2026.