Abstract
The problem of network aggregation is defined as the simplification of the number of nodes and links in a transportation network. The objective of a network aggregation technique is to reproduce the level- of- service attributes between any two points using a spider network as a proxy for the detailed. The aggregation procedure categorizes links into functional groups such as access, egress, line- haul, bypass and intra zonal circulation. The technique presented has several advantages which are discussed.