This report presents the findings of a research project to study and develop a list of "green friendly" Best Management Practices (BMPs) for Illinois interstate rest areas. The research team carried out six major tasks: (1) developed energy cost baseline data and carbon footprint for each Illinois rest area; (2) performed onsite assessment for three selected rest areas; (3) conducted comprehensive literature review; (4) identified potential green-friendly best management practices; (5) developed a Decision Support Tool (DST) for optimizing LEED upgrade decisions of rest area buildings; and (6) developed recommendations for upgrading the three selected rest areas.