This 2007 guide seeks to assist state DOTs in understanding the relevance of economic development in relation to their planning activities and assesses the potential economic development benefits of their actions. The guide explains economic development concepts as they relate to transportation improvements. It also describes the promotion of economic development as a public policy goal and summarizes the current state of involvement of state DOTs in economic development. Because the intended audience is state DOTs, this document focuses primarily on highway improvements, although many of the concepts and techniques apply to other modes as well.