SYVARI is new Finnish trafffic signal
control Strategy developed by Matti Salonen, City of Turku. It is
originally developed for implementing bus priorities in fixed cycle (coordinated)
signal control. It can be implemented also in isolated intersections or
traffic signal without bus priorities at all.
The main idea for SYVARI is to use
the signal stage ring control common in most nordic signal
controllers for isolated control and to syncronize this according the
coordinated control based on fixed cycle control.
This simple approach means that
planning and programming of the SYVARI control is easy because it is
based on the isolated control - for instance the use of extra public
transport stages is flexible. However SYVARI still maintains the
coordination (green wave) along the main street when there is no bus
priority needed.
SYVARI control is used in a Finnish
National Traffic Signal Project called JENKA (this means "Public
Transport priority for every city"). The project is subsidied by the
Ministry of Transportation and Communication with eight great cities in
Finland.
Look presentation
(in English) of SYVARI
More information
- from JENKA project: Kari Sane City of
Helsinki
- from SYVARI control: Matti Salonen City of Turku
