Yeah well put. It should be said that regulations OFTEN cite certifications from non-regulatory bodies. Regulators are often legislators and executors, not scientists that understand the rationales behind good practice. Certification bodies (like UL, as one example, or SAE for automotive) have the scientists to do the requirements.
It’s disingenuous to say rural areas are too poor to install public transportation. It’s that there’s too much to install (too much space) for any given user. Just economics of rural areas. It doesn’t make sense unless we can significantly reduce the capital investment and running costs of public transport.