Which ASME standard number relates to mobile and locomotive cranes?

• A. ASME B30.9
• B. ASME B30.2
• C. ASME B30.3
• D. ASME B30.5

Answer: (D)

Understanding this topic starts with knowing that ASME B30 standards are organized by crane type. The standard that specifically covers mobile and locomotive cranes sets the safety requirements for how these cranes are operated, inspected, maintained, and used for load handling. It addresses the unique risks of wheeled and track-based cranes, such as stability during travel, rigging practices, setup, signaling, and personnel safety on job sites.

That focus makes ASME B30.5 the best choice because it is the standard created for mobile and locomotive cranes. The other standards in the B30 family cover different equipment or crane configurations (for example, slings or other crane types), so they don’t govern mobile and locomotive cranes.