Which organization publishes specifications, test protocols, and guidelines for highway design and construction?

Which organization publishes specifications, test protocols, and guidelines for highway design and construction?

• A. ASTM International
• B. AASHTO
• C. ISO
• D. IEC

Answer: (B)

The main idea is identifying who sets the official standards for highway design and construction. In the U.S., that role is filled by AASHTO—the American Association of State Highway and Transportation Officials. This organization publishes the key specifications, test procedures, and guidelines used in highway projects, such as the design and construction standards that state departments of transportation rely on. Notable examples include guidelines for geometric design of highways and streets and the standards used for bridge design and construction. Other groups like ASTM International produce many material testing and product standards, but they’re not the primary source for highway design guidelines. ISO offers international standards across many fields, and IEC focuses on electrical and electronic standards. For highway design and construction specifically, AASHTO is the main publisher of the required specifications and protocols.

The main idea is identifying who sets the official standards for highway design and construction. In the U.S., that role is filled by AASHTO—the American Association of State Highway and Transportation Officials. This organization publishes the key specifications, test procedures, and guidelines used in highway projects, such as the design and construction standards that state departments of transportation rely on. Notable examples include guidelines for geometric design of highways and streets and the standards used for bridge design and construction.

Other groups like ASTM International produce many material testing and product standards, but they’re not the primary source for highway design guidelines. ISO offers international standards across many fields, and IEC focuses on electrical and electronic standards. For highway design and construction specifically, AASHTO is the main publisher of the required specifications and protocols.