Calculation of demand from path sequences

Demand matrices for used demand segments can be calculated based on path sequences. To do so, use the procedure Calculation of demand from path sequences (User Manual: Calculating demand from path sequences). Prerequisites for this calculation are:

  • Path sequences with volumes and an assignment of used demand segments for the paths must be available.
  • Demand matrices for subordinate demand segments must exist and they must be defined as assignment matrices of the respective demand segments.
  • The demand matrices must be editable, as demand might be added.

The demand is calculated as follows:

For path sequences in a path sequence set, for each OD pair of consecutive path sequence items, the volume of path sequence - divided by the occupancy rate of the demand segment used - is added to the value of the matrix specified as assignment matrix for the demand segment used (User Manual: Managing demand segments).