CONTROL STRATEGIES FOR VARIABLE MESSAGE SIGNS

CONTROL STRATEGIES FOR
VARIABLE MESSAGE SIGNS

M. Papageorgiou¹, P.Gower², A. Messmer³, J.M.Morin⁴

^{1Technical University of Crete,
GR-73100 Chania, Greece

²Tranport Research Laboratory, Old Wokingham Rd, Crowthorne, Berkshire RG116AU,
UK

³Ingenieurbuero A.Messmer, Sommerstr. 12, D_81543 Muenchen, Germany

⁴ISIS Consultants, 2 rue Stephenson, F-87181, St Quentin en Yvelines, France

ABSTRACT

The primary objective of the European Advanced Transport
Telematics (ATT) project QUO VADIS is to establish how Variable Message Signs (VMS) are
best managed to give high quality information and guidance to drivers and to improve the
capacity of a road network. Three alternative methods (selection from a plan library,
automatic control, and expert system) for the real-time VMS control based on detector
measurements are outlined along with some practical issues related to their application to
two networks in Scotland and Denmark respectively.}