The Multimodal Planning Division (MPD) of the Arizona Department of Transportation has been tasked with identifying corridors throughout the state where improvements to the transportation infrastructure supports the greatest potential commercial and economic benefits. These "Key Commerce Corridors" represent a strategic statewide approach to leverage infrastructure improvements to enhance Arizona's competitive economic position. This document presents the basis for the identification and evaluation of the Key Commerce Corridors.

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.

This report examines community concerns and challenges related to extreme heat during a typical year and during the COVID-19 pandemic. It considers which policies have helped address these concerns and challenges and identifies potential opportunities to further support community members with the challenge of extreme heat. The report focuses specifically on American Indian and Latino/a community members, given their disproportionate risk of experiencing detrimental impacts of extreme heat and overlapping risk factors for negative outcomes of COVID-19.