The purpose of the Arizona Update of the Colorado River Regional Transportation Study was to update the Arizona portion of the 1993 Colorado River Regional Transportation Study. The study was conducted by the Arizona Department of Transportation in cooperation with Bullhead City and Mohave County. For this study, Bullhead City and Mohave County collected traffic volume data and information on the current population and employment.

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.

This report summarizes the results of a peer review supported by the Travel Model Improvement Program, which is sponsored by FHWA. The peer review of a travel model can serve multiple purposes, including identification of model deficiencies, recommendations for model enhancements, and guidance on model applications. Given the increasing complexities of travel demand forecasting practice and the growing demands by decision-makers for information about policy alternatives, it is essential that travel forecasting practitioners have the opportunity to share experiences and insights. The TMIP supported peer review provides a forum for this knowledge exchange.

This study focuses in the area surrounding the municipalities of: Town of Pima, City of Thatcher and City of Safford. The junction of the two major state routes, US 191 and US 70 is located in the heart of these communities and serves as major arterials for local travelers. Parsons Brinckerhoff has been commissioned by ADOT to perform this preliminary assessment for the development of an alternate route through the Thatcher/Safford/Pima area.