“Now, let’s move to a practical example.
Here, we are given data about different zones, including the number of trips produced and attracted by each zone. We are also given travel times between zones.
Using a gravity model with an impedance term of the form F{i j} = C{i j} power alpha, estimate the origin - destination (O-D) trip matrix given the set of O-D travel times (C{i j}) in Table 1, the zonal productions and attractions in Table 2, and alpha = 1.5. Assume that K{i j}=1 for all zones. Do