AASHTO GSH-10-M, Guide Specifications for Highway Construction, Tenth Edition (2020), supplies model specification language that state and local agencies can adopt or adapt for roadway construction contracts. The edition is organized in sections, beginning with Section 101, which carries the general provisions that apply across the document. Section 410, Emulsified Asphalt Fog Seal, appears as a new section in this edition, extending coverage of pavement surface treatments. Agencies use the guide as a national baseline and then modify individual provisions to reflect local materials, practices, and legal requirements. It is used by states and local agencies as a standard requirement for roadway construction contracts and as a basis for developing their own specifications. The specifications are intended for highway agency specification writers, designers, and contractors working under agency contracts.