VISSIM 5.30-05 User Manual

7 Simulation of Pedestrians
7.1.4.1 Creating
Areas have no direction and for pedestrians there is nothing corresponding
to a connector which is known from the vehicle traffic network. Construction
elements are connected if they touch directly or overlap.
Obstacles have the same effect on the walking dynamics as if one had
modeled a hole in the walkable space.
Before the information on walkable areas is sent to the pedestrian model,
touching and overlapping areas are combined to one walkable polygon as
big as possible. In this case, the original area edges do not have the effect
of an obstacle.
Thus splitting up areas during editing does not have any influence on the
simulation of movements of pedestrians.
Defining an area of a difficult shape can be performed in several steps by
specifying multiple overlapping polygons.
Areas of pedestrians created in the Pedestrian traffic mode serve as origin
and/or destination of the pedestrian flow, whereas a link created in the
Vehicular traffic mode with option Use as pedestrian area serves as
walkable space where signal heads, detectors or conflict areas can be
placed for interaction with vehicular traffic. For more details, cf. section
7.1.5.
For definition of a construction element and editing in the Pedestrian traffic
mode, the Undo and Redo functionality is provided. You may either click
the appropriate icon in the horizontal symbol bar or use the commands in
the EDIT menu.
To create a construction element, follow the steps outlined below:
1. Click the PEDESTRIAN EDIT MODE button in the symbol bar to activate
the Pedestrian traffic mode.
2. Click the particular icon to activate the desired type of the construction
element:
- Area
- Obstacle
- Ramp
3. Click the appropriate Shape mode icon:
- Rectangle
- Polygon
346 VISSIM 5.30-05 © PTV AG 2011