"The majority of specifications used by state departments of transportation (DOTs) attempt to describe how a construction contractor should conduct certain operations using minimum standards of equipment and materials. These prescriptive specifications, commonly known as method specifications, have generally worked well in the past. However, with changes in the technology and the emphasis on providing more rapid solutions, more innovative specifications may be required in the future. Performance specifications can be used as a communication tool that translates the owner's performance requirements into language that will allow the contracting industry to understand, plan, and build the project to meet the requirements. Over the past decades many transportation agencies have experienced workforce reductions, thus diminishing the level of experience and number of engineers and inspectors. These demands have caused some agencies to experiment with the use of performance specifications in an effort to meet both the initial quality and long-term durability needs of the constructed products. Performance specifications have been used successfully on a project-by-project basis, but a general framework is needed to help agencies use performance specifications systematically. This guide and the associated materials provide a framework that state DOTs can use to develop performance specifications; they include sample specifications language and implementation guidelines for both managers and specification writers. The objective of this project was to develop performance specifications and strategies to accelerate construction, minimize disruption to traffic and community, and produce long-life facilities in the interest of rapid renewal. The final report documents the methodology used to create the products that were developed as part of the project. The products of the research include (1) guide performance specifications for different application areas and contracting mechanisms, which agencies can tailor to address project-specific requirements; (2) an implementation guide for executives and decision makers, which presents a broad overview of the benefits and challenges associated with implementing performance specifications; and (3) a guide for specification writers, which provides a step-by-step "how-to" guide for developing performance specifications and using the model performance specifications that were developed as part of this project. The report, supporting guidelines, and model guide specifications will be useful to state DOTs, municipal agencies, consultants, and construction contractors. These products provide a starting point for an agency that wants to investigate the use of performance specifications as part of its routine operations"--Foreword.