The reference time periods of the costs and revenues to be calculated must to be identical in order to obtain reasonable cost coverage results (Fundamentals: Calculation of operating costs and fare gains (revenues)).
Costs are calculated based on the analysis period (Fundamentals: Calculation of the operating costs). The program distinguishes between vehicle-bound costs and infrastructure costs, which are calculated with the help of the PuT operating indicators procedure (Carrying out the procedure PuT operating indicators).
The revenues are calculated based on the assignment time period (Fundamentals: Calculation of the fare revenues (revenue calculation)).
The attribute OD trips total indicates the number of passenger trips in the assignment time period; it thus varies according to the particular assignment time period. This way, the revenues also vary according to the temporal position and length of the assignment time period.
Since the assignment time period often covers only the peak hour, it is necessary to project this result to the entire analysis period.
Following the projection, you can compute the cost coverage in your network model or, for example, combine indicator values calculated during assignment and indicators calculated by means of the PuT operating indicators procedure.
