YKaavio

WHAT IS YKAAVIO
YKaavio is a free software package for planning the arterial coordination (green band) of signalized junctions. It is based on the well-known graphical method presented first time in the Finnish National Traffic Signal Planning Handbook LIVASU-1978.
The current version of YKaavio is provided for drawing and checking the time-space diagrams of coordinated signals.

WHAT IS THE GREEN BAND
Green Band diagram is a time-space diagram for the timings of coordinated traffic signals

OUTPUT IS GRAPHICAL
The user interface of YKaavio is grafical. It is very descriptive, so the objectives of the planning process are all the time in hands.

SEVERAL TIMING PLANS
You can draw up to 16 timing plans simultaneously. So it is easy to compare several possibilities to coordinate traffic signals.

RECENT VERSION 2.0
- English version available. Read more about the history of YKaavio

DOWNLOAD the recent version of YKAAVIO here

INPUT DATA
Input data needed for YKaavio:
- Distances between junctions
- Distance between stop lines of the same junction
- Movements (signal groups)
- Signal plans (timings)
- The objective speed of the green band

All input is given in tables. The link and junction data can be changed using the numerical interface directly on the screen

OUTPUT DATA
The program draws the time- distance diagram of the signal coordination, called green band. Scales of the diagram can be specified free.

The diagram shows in every junction and in every link:
- junction number and name
- link length and objective band speed in both directions
- signal timings in graphical and in numerical format
- theoretical speed of the leading and lagging edges of the green band.

DRAWBACKS
- The current version of the program is suitable for drawing and analysing of the green band diagrams
&- Planning or optimising options are not available.










 


YKAAVIO