There are three organization schemes used in the ITS costs database: one for cost element ranges, one for sample unit costs, and one for system cost summaries.
Cost element ranges are organized first by subsystems, based roughly on where an ITS element physically resides, based on an earlier version of the National ITS Architecture. In some cases, the subsystems were further divided to better reflect cost elements and actual ITS deployments, resulting in a total of 22 subsystems. These subsystems are then organized by the five Physical View Classes in the Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT) Version 9.0: Center, Field, Personal, Support, and Vehicle.
Sample unit costs are organized by the same subsystems as the cost element ranges with two additional subsystems: Other System Wide and Non-ITS. Additional information can be found in About Costs.
System cost summaries are presented according to the various topics of interest to transportation professionals. There are 16 topic areas. Summaries are also classified by project location. Links to related cost element ranges data are provided in each system cost summary.