Which governmental agency publishes Emergency Handling of Hazardous Materials in Surface Transportation?

The correct answer reflects the role of the Association of American Railroads in addressing safety protocols and guidelines specific to the transportation of hazardous materials. This organization plays a critical role in the railroad industry, providing guidance and information relevant to the handling and transportation of such materials to ensure safety and compliance with federal regulations.

The publication "Emergency Handling of Hazardous Materials in Surface Transportation" primarily focuses on the procedures and practices necessary for effectively responding to incidents involving hazardous materials during their transportation on railroads. This aligns with the responsibilities of the Association of American Railroads, which aims to promote safe and efficient rail transport.

In contrast, other agencies like the Environmental Protection Agency focus predominantly on environmental regulations and issues, the National Transportation Safety Board investigates transportation accidents but does not specialize in publishing handling protocols, and the Transportation Security Administration is more focused on security regulations related to transportation rather than materials handling. Hence, the Association of American Railroads is the appropriate source for this specific publication.