LEGION Model Builder Help

Setting Mesoscopic Transition Zone Parameters

This procedure assumes that you have placed an MTZ object or segments, and that the Edit Mesoscopic Transit Zone dialog box is displayed.

To Set MTZ Parameters:

  1. Enter a name for the MTZ in the Name box (or leave it if you are happy with the existing name).
  2. Enter a figure in the Capacity box. This defines the maximum number of Entities that the MTZ can hold at any one time.
  3. From the Activity drop-down, choose an activity for the Entities in the zone.
  4. If the zone contains two areas or segments and they should both be the same shape and size, tick the Make exit size and shape consistent with entry box.
  5. If the zone contains two areas and Entities should exit using their original positions in the entry area, tick the Transpose entity positions on exit box.
  6. Delay Profiles may be assigned by Entity Type or Final Destination.
    • Assign Delay Profiles by Entity Type:
    • Assign Delay Profiles by Final Destination:
      Tip: Each MTZ can have its own assignment method, but Entity Type and Final Destination assignments cannot be combined in a single MTZ.
  7. Assign the default Delay Profile. This is the profile all, or most, entities will use. It is the top row of the Delay Profiles table.
    • If assignments are based on Entity Type, select a profile for the All Other Entity Types row.
    • If assignments are based on Final Destination, select a profile for the All Other Final Destinations row.
  8. To add a Delay Profile for a specific Entity Type or Final Destination, click the New button to add a new row to the Delay profiles table.
  9. In that table, double-click in the left-hand column (Entity Type or Final Destination).
    • If assignments are based on Entity Type, choose an Entity Type from the drop-down.
    • If assignments are based on Final Destination, choose a Final Destination from the drop-down.
  10. Double-click in the adjacent Delay Profile column and choose a profile from the drop-down.
  11. Repeat steps 8 to 10 for any new combinations of Entity Type/Final Destination and Delay Profile needed.
  12. To remove a Delay Profile assignment, select the relevant row in the Delay Profiles table and click the Delete button. Multiple rows can be selected using the Ctrl and Shift keys.
    Tip: For more information, see Delay Profiles. Delay Profiles must exist to be associated with MTZs.
  13. In the Link Options area, select one of these two options:
    • Revert to final destination (Entities will proceed toward this target or targets)
    • Specify links
      • If Specify link is selected, click on the Links tab and add target objects manually following the steps in Linking Methods).
  14. If it is necessary to test the model against required regulatory flow, then the flow through the MTZ can be set not to exceed a specified maximum. To do so, go to the Flow Rate Limiting section, tick the Maximum box, and enter a value for people/minute in the adjacent field.
  15. To associate the object with an Availability Profile, click the Availability tab.

To Set Availability and Condition Parameters:

  1. Choose an Availability Profile from the drop-down labelled Time Scope.
  2. To apply conditions to the Availability Profile, tick the box labelled "use condition".
  3. Select an option from the left-hand drop-down:
    • AND – the condition will apply only when the Time scope settings and the conditional settings are both true.
    • OR – the condition will apply when either the Time scope settings or the conditional settings are true.
  4. Set up the condition as described from step 4 of "To set up a Condition:" in Setting up Conditions.
  5. To apply any restrictions to the condition, click on the Availability tab again and enter values for the following restrictions (details in Restrictions):
    • Time before action
    • Minimum activity period
    • Maximum activity period
    • Minimum time between Actions

To Set Target Parameters:

  1. Entities automatically navigate towards the Focal Point of the object if, and when, they cannot see it due to obstructions. In rare instances, this may cause them to move in an unexpected or illogical manner. To remedy this, open the Target Parameters tab and untick Use focal point for navigation. In this case, Entities will navigate towards the closest point on the Focal Segment.
  2. Click OK to save the new settings and close the dialog.
Parent topic: Mesoscopic Transition Zone