VISSIM 5.30-05 User Manual

6 The Traffic Network
Delete
► In the selection list: Select the stop and click DELETE.
► In the network display:
- Select the bus lay-by and press DEL. All connectors and priority
rules are removed at the same time.
- Select the street stop and click DEL. Alternatively, you can drag the
selected stop out of its link or connector.
6.5.2 PT Lines (Bus/Tram lines)
A PT line consists of buses or light rail vehicles/trams serving a fixed
sequence of PT stops according to a timetable. The stop times are
determined by dwell time distributions or calculations of passenger service
times. If a real-world PT line should operate on different routes, it has to be
coded as multiple separate lines in the VISSIM network.
PT lines are coded similarly as static routes except that PT lines do not
distribute arriving vehicles but generate vehicles.
PT vehicles follow the PT line route and remain in the VISSIM network
even after the route finishes. Thus it is important to model PT lines as such
as they end on an exiting link. Otherwise PT vehicles remain in the network
and travel on undefined routes.
6.5.2.1 Creating
Before coding a PT line, all PT stops should be created.
It is recommended to start every PT line on a separate link that is
dedicated to that line. Thus a “dummy stop” can be created to model a
variation of arrival times and the sequence of vehicle arrivals of different PT
lines can be modeled.
PT line definition is a five step process. To initialize the process, activate the
PT Lines mode. The next required action is shown in the status bar. To get
back one step, left click outside the VISSIM network.
1. Select the link for the start of the PT line.
2. Right click anywhere inside the selected link to create the line start (a bar
in highlighted red appears at the start of that link).
3. Select the link/connector for the PT line destination.
4. Right click on the location for the route destination point (green bar).
If there is a valid connection between the red bar and the click position
the link sequence is shown as a yellow band and the PT line window
appears. Define the PT line data and confirm with OK. If the yellow band
shows a route different from the desired one it can be modified later.
248 VISSIM 5.30-05 © PTV AG 2011