Calculating dwell time with PTV Viswalk
You can define parameters for the calculation of the number of boarding passengers and the dwell time which occurs during microscopic pedestrian simulation. Example (Modeling pedestrians as PT passengers)
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Note: For this, you require PTV Viswalk. |
1. Ensure that the following requirements are met:
- The PT stop must have at least one pedestrian area with the Public transport usage attribute allocated of the Waiting area or Platform edge type (Attributes of areas).
- At least one location distribution must be defined for alighting passengers (Using location distributions for boarding and alighting passengers in PT).
- At least one pedestrian composition has to be defined (Defining pedestrian compositions).
2. On the network object sidebar, click Public Transport Stops or Public Transport Lines.
3. In the network editor, right-click the PT stop.
4. On the shortcut menu, click Edit PT Line <No. > PT Stop <No.> PT Pass <No.>.
The PT Line Stop window opens.
5. Make the desired changes:
Element |
Description |
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PT stop active |
If the option is selected, the public transport stop for the current PT line or PT partial route is activated. If the option is not selected, the public transport stop is not operated and is shown in green. |
Skipping possible |
If the option is selected, the public transport stop is not operated if the vehicle passes the 50 m mark before the public transport stop and no passengers would like to board or alight. A public transport stop bay can only be fully skipped if both of these are directly connected to the link, from which the PT vehicle is coming. If the network structure is more complex or if the PT vehicle has already reached the public transport stop bay or the connector, when the 50 m mark is passed, the bay is passed without making a stop. Skipped public transport stops are reported in the Vehicle Records file with its identifier and recorded as having a public transport stop dwell time of 0 seconds. |
Departure offset |
Departure time defined according to timetable (Editing a PT line stop) |
Dwell time section:All dwell time settings apply for the line stop of a PT partial route. |
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Minimum |
If this option is selected, a time distribution must be selected to be used as the basis for calculating the minimum dwell time. If the option is not selected, the minimum dwell time = 0 seconds. PT vehicles depart once the minimum dwell time runs out. PT vehicles also depart if the minimum dwell time = 0 seconds when all alighting passengers have alighted. In addition, you can select the option Late boarding possible for each line stop. |
Calculation |
Calculation: Alighting percentage as percentage indication when the public transport stop is allocated a pedestrian area as Platform edge or Waiting area. Viswalk pedestrians who board or alight at a public transport stop are modeled. The calculated public transport stop dwell time depends on the time necessary for boarding/alighting passengers. The option Late boarding possible is taken into consideration for the calculation of the public transport stop dwell time. |
Alighting percentage |
Percentage of the passengers, which will alight at this public transport stop. This value serves the volume-dependent calculation of the stop time. |
Boarding and alighting of passengers section |
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Alighting composition |
Composition of the PT-passengers (Defining pedestrian compositions). Within the PT vehicle, the Pedestrian types, corresponding to the selected composition, are generated and the given percentage set is used. |
Alighting location |
Alighting location: Distribution of the alighting passengers at the doors of the PT vehicle at this public transport stop (Using location distributions for boarding and alighting passengers in PT). Within the PT vehicle, the alighting passengers at this public transport stop corresponding to the selected composition are distributed to the vehicle doors. If areas without passengers are defined on the 2D/3D model segments of the public transport vehicle, these areas are excluded from the distribution. |
Alighting possible, Boarding possible |
Allow or disallow boarding and/or alighting on the right and left. The arrow in the schematic drawing of the public transport vehicle shows the direction of travel. |
Late boarding possible |
If this option is selected:
If the option is not selected, the minimum dwell time = maximum dwell time.
To ensure that the PT vehicle departs exactly at the time calculated, in case the option is not selected, no passengers can board the PT vehicle as soon as the doors begin to close. The closing of the doors always begins 3 seconds before departure. The doors also close when a passenger boards immediately before the doors begin to close. |
6. Confirm with OK.
Attributes for the micro-simulation of pedestrians of previous versions
- ► If you would like to reproduce the results of earlier Vissim versions, select the following attributes:
Attribute |
Network object type |
Settings |
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Use minimum dwell time |
PT line stop |
Nothing selected |
Late boarding possible |
PT line stop |
selected |
Slack Time Fraction |
Public transport line |
no change |
Departure offset |
PT line stop |
no change |
Superordinate topic:
Calculating the public transport dwell time for PT lines and partial PT routes