Reference
J. R. D. Frejo, I. Papamichail, M.
Papageorgiou, and B. De Schutter, "Macroscopic modeling of variable speed
limits on freeways,"
Transportation Research Part C,
vol. 100, pp. 15-33, Mar. 2019.
Abstract
The goals of this paper are to analyze the effects of Variable Speed Limits
(VSLs) on freeway traffic flow, to propose a new macroscopic model for VSL, and
to compare, calibrate and validate the most well known macroscopic models for
VSL using real data from a stretch of the A12 freeway in The Netherlands.
Firstly, a new macroscopic model for VSLs is presented, combining
characteristics of previously proposed models, in order to have the capability
of modeling different capacities, critical densities, and levels of compliance
for segments affected by speed limits. Subsequently, the effects of VSLs on the
fundamental diagram of traffic flow are studied concluding that, at least for
the considered stretch of the A12 freeway, the capacity of the freeway segment
is decreased (and the critical density is increased) when the speed limit is
reduced from 120 to 90 km/h. Furthermore, analyzing a wider range of VSLs, it
is shown that the VSL-induced fundamental diagram is not triangular and that
the speed limit compliance can be very low if enforcement measures are not
applied. Finally, the proposed model is compared analytically, numerically, and
graphically with the two most well-known macroscopic models for VSLs. The
analysis and the simulation results show that the proposed model delivers more
accurate predictions in cases where the compliance is low and/or the capacity
is reduced by the use of VSLs.
Publisher page
Downloads
BibTeX
@article{FrePap:19-022,
author = {Frejo, Jos{\'{e}} Ram{\'{o}}n D. and Papamichail, Ioannis and
Papageorgiou, Markos and De Schutter, Bart},
title = {Macroscopic Modeling of Variable Speed Limits on Freeways},
journal = {Transportation Research Part C},
volume = {100},
pages = {15--33},
month = mar,
year = {2019}
}