Performing "What If" Demand Forecast Analysis

You can perform "what if" demand forecast analysis by changing various elastic factors.

You must define your demand forecast indexes.
  1. Click Analysis > Demand Forecast Factors.
    The Demand Forecast Factor Adjustment dialog box appears.
    Demand Forecast Factor Adjustment dialog box
  2. In the Percentage Changes frame, change as many values as you want.
    Type the value as a percentage of 100. For example, to reduce the service frequency by half, enter -50 in the Service Freq. field. A negative value means that the changes have an adverse effect on the passenger. A positive value has a favorable effect.
  3. Click OK.
    In the example shown in the following graphic, the values in the Percentage Changes frame indicate that increasing fares by 10% while increasing service frequency by 50% increases the demand forecast by 11.59%.
    Demand Forecast Factor Adjustment dialog box
  4. Click Cancel.
    Note: If you use Demand Forecast Factors after comparing two buffered areas without clearing the saved demand forecast, that is, the forecast performed on the first buffered area, the results will correspond to the more recent demand forecast.