This is a tool that is located on the Sample Adequacy section of the Sample Adequacy tab.
Function
The Expansion Factors interface () is used to calculate expansion factors for each Functional System, Urban Code, and Volume Group stratum. The user must Create TOPS before working with this interface.
Controls
This interface hosts the Data Table dropdown control, alongside these controls:
| Control | Used To... |
| Year Dropdown | Select the year to use when viewing the data. |
| View Expansion Factors Button | View the expansion factors previously calculated for the selected HPMS Data Table. |
| Calculate Expansion Factors Button | Calculate expansion factors for the selected HPMS Data Table. |
| Show Problematic Factors Only Checkbox | Filter expansion factors that do not exceed a maximum of 100.000, the FHWA recommended value. |
Table Elements
This interface also hosts some table elements.
| Element | Function |
| Caret ( |
Expands or collapses stratums. |
| Caution icon ( |
Notifies the user of any expansion factors that exceed the recommended upper bound; displayed in the second column of the table. |
| Links (ex. |
Indicates that this expansion factor exceeds the recommended upper boundary; opens the Potential Samples interface. |
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