The ITS Costs Database contains two types of entries: unit costs and system cost summaries.
Unit costs are the costs associated with an individual ITS element, such as a video camera for traffic surveillance or a dynamic message sign. A range of costs (e.g., $500 - $1,000) is presented for the capital cost and annual operations and maintenance (O&M) cost of each element as well as an estimate of the length in years of its usable life. Unit costs are available in two formats: unadjusted and adjusted. Unadjusted costs are presented as the original value along with the dollar year. The dollar years vary over time (e.g., 1995, 2001, 2005). To account for these differences, each cost value is adjusted to a common year. Indexes maintained by the Bureau of Labor Statistics are used to adjust the unit cost values. Specific indexes representative of the ITS elements are used in the calculations.
System cost summaries are the costs of an ITS project or portion of an ITS project such as the cost of expanding a statewide road weather information system or the detailed costs for a signal interconnect project. Each entry describes the background of the project, the ITS technologies deployed, and presents the costs and what the costs covered. A breakout of components and costs is provided for most summaries depending on the information available. Both capital costs and annual O&M costs are presented whenever possible.