This text provides a systematic guide describing practical approaches to planning, developing, and implementing successful ITS architectures in regional settings. Based on the principles and methods used to create developed US national ITS architecture, the authors provide readers with a solid understanding of each critical step involved in the regional ITS deployment process. The text also explores key ingredients that make up an effective ITS mission statement, how to choose the best ITS technologies for a specific application, the components involved in developing and appropriate logical and physical architecture.