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Calculating dwell time according to the advanced passenger model

1.  Ensure that the following parameters are defined:

• Boarding passenger profile per PT stop and assignment to desired PT lines (Attributes of PT stops)
• Specific PT parameters per vehicle type (Changing attributes for a vehicle type for the duration of boarding and alighting)
• Occupancy rate per PT line (Attributes of PT lines), (Editing functions and distributions of a vehicle type)

2.  On the Network objects toolbar, click Public Transport Stops or Public Transport Lines.

3.  In the network editor, right-click the PT stop.

4.  From the context menu, select Edit PT Line <No. > PT Stop <No.> PT Pass <No.>.

The PT Line Stop window opens.

5.  In the Dwell time section, select Calculation.

6.  Make the desired changes:

Element	Description
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 time offset	Departure time defined according to timetable (Editing a PT line stop)
Dwell time	All settings for the dwell time apply for the line stops of a PT partial route. Distribution and Calculation are always available if the public transport stop is not allocated a pedestrian area with Public transport usage. Distribution: The stop time is obtained from the selected dwell time distribution. Calculation: The number of boarding passengers is determined on the basis of the boarding passenger profile at the public transport stop. The time required for the boarding and alighting is calculated on the basis of the PT parameters of the vehicle type. Alighting percentage: Enter percent of passengers who alight at this public transport stop. This value serves the volume-dependent calculation of the stop time.

7.  Confirm with OK.

After you have defined the PT line, PT parameters per vehicle type, and the attributes for the PT line stop, Vissim calculates the stop dwell times of a PT vehicle as follows:

• Number of alighting passengers = Number of passengers x percentage of alighting passengers
• Number of boarding passengers = Number of all passengers waiting (who want or are allowed to take the line) If the number of waiting passengers exceeds the free capacity of the PT vehicle, the number of alighting passengers is limited to the maximum capacity of the vehicle.
• Alighting time = Number of alighting passengers x average alighting time (Changing attributes for a vehicle type for the duration of boarding and alighting)
• Boarding time = Number of boarding passengers x average boarding time
• Passenger service time = Clearance time + alighting time + boarding time

After completion of passenger service, the PT vehicle remains at the stop until the scheduled departure time that accounts for the respective slack time fraction.