The State of the System Report is a compilation of the physical inventory and status of the Maricopa County Department of Transportation’s infrastructure. It addresses roadway congestion, traffic safety, low volume road paving, bridges, and pavement conditions. Also, included are recommendations for future improvements within each of the infrastructure categories. The SOS report has been produced annually since 1998.

Provides insights on historical and current issues in transportation planning. The first section describes the last five decades of planning efforts, funding initiatives and the increasing use of the roadway system. The second section is a series of fact sheets and maps of each subregion that presents the extent of the roadways, traffic volumes on major streets, transit and bicycle facility availability, future planned improvements, issues within the subregion, an overlay of the draft biological reserve, and in the northwest, a further overlay of pygmy-owl habitat with a detailed analysis of bond projects.

Provides background information relevant to the Circulation Element of the draft Comprehensive Land Use Plan. It describes historic traffic volumes for roads within the various subregional planning areas of Pima County, and compare Pima County trends to national data in areas such as vehicle ownership, travel time, vehicle miles traveled, work trip modes of travel, registration, and vehicle costs.

A comprehensive review of over 100 city or county budgets. Many of these governmental entities have service populations in the general order of magnitude similar to Pima County, and some have experienced similar trends in population growth. Given the comparisons that have been made, Pima County's per capita expenditure is among the lowest of other high growth counties with a similar population base.