I am working on the control of urban traffic networks. I have the urban traffic volume data that consist of attribute like location, route length, number of vehicles per day, ADT, ADTT and so on. How can I determine trip production or trip completion flow using historical data? The network is a large regional network i.e heterogeneous network, that requires partitioning into homogeneous subregions, the second question is how can I partition the urban traffic networks?