ANSI and NFPA are both safety standards, but covering slightly different things.
So to stay more on the subject, here is an excerpt from the Oregon Reg's;
"918-525-0040
Adopted Minimum Safety Standards
Effective November 1, 2008 the following standards are adopted by reference as the standards for the manufacture, conversion, alteration, or repair of recreational vehicles, recreational park trailers, accessory buildings, and accessory structures:
(1) The 2008 Edition of NFPA 1192, Standard on Recreational Vehicles, as published by the National Fire Protection Association, and further amended by the division.
(2) The 2005 Edition of ANSI 119.5, Standard for Recreational Park Trailers, as published by the American National Standards Institute, and further amended by the division.
(3) The 2008 Edition of NFPA 70, National Electrical Code, specifically but not limited to, Article 551 pertaining to Recreational Vehicles and Article 552 Park Trailers, as published by the National Fire Protection Association, and further amended by the division.
(4) The 2008 Edition of ANSI/RVIA Standard for Low Voltage Systems in Conversion and Recreational Vehicles, as published by the Recreational Vehicle Industry Association.
(5) The Oregon Residential Specialty Code, as adopted in OAR chapter 918, division 480, and those standards referenced within are adopted as the division’s standards for the construction, manufacture, alteration, repair, and conversion of accessory buildings and accessory structures used in conjunction with recreational vehicles and recreational park trailers."
There is no jurisdiction that does not have life safety reg's in place. The issue seems to be that people think because there's wheels underneath that only vehicle regulations apply. That is NOT the case.