The purpose of this guidebook is to serve as a reference tool to provide tribal governments and tribal planning departments assistance in understanding the transportation planning and programming processes and how to work with ADOT to receive positive benefits. Specifically, this guidebook discusses the ADOT statewide, regional and rural area transportation planning process.

A benchmark survey was conducted by MAG and ADOT in December of 2006 to determine initial attitudes and awareness of litter issues in Arizona and to evaluate littering behavior. A follow-up survey was then conducted in July 2008, at the end of the first two years of the campaign, to determine if any changes in awareness, attitudes or behavior were realized. Subsequent follow-up studies focused on Maricopa County residents.