[j-c-c]

I covered a lot of this hassle discussed here in another thread, that mostly related to the project in this thread.
Fla statue 316.515.3a states among other things a straight truck is limited to extreme length of 40' excluding safety and energy conservation devices approved by the department.
Elsewhere statues state a 2 axle RV's length is controlled by Statue 316.515.3a.
Elsewhere, "department" is defined as FLHSMV, Florida Highway Safety and Motor Vehicles.
So many weeks ago I began my quest to find out what exactly defined/determined what was an "energy conservation device approved by the department".

1. First stop was a call to the county's DMV, no clue but suggested I speak with county department manager.
2. County DMV manager had no clue, suggested I call Tallahassee FLHSMV.
3. Calling Tallahassee, after on hold for one hour, and requesting first my DL or VIN number they answered and had no clue what the answer was, suggested I call Regional FLHSMV DOT office in Palmetto Fla, that does "inspections", whatever that means.
4, I called Pakmetto 10:00am, waited for hour, the very polite lady did not have a clue, but took my name number and my question and said someone would call me back regarding the matter. I asked would that likely be today, she said yes, and definitely by tomorrow.
5. After no call back, I emailed my question and request for assistance to Molly Best, Director of Communications for FLHS MV in Tallahassee,
4 weeks later still no reply
6. Three weeks ago, I sent a certified letter FLHSMV in Tallahassee, repeating my requests. No reply as of today
7. Today I visited the Ft Meyers Regional FLHSMV-Florida Highway Patrol Office (since likely they would be the citing agency on the side road) and requested the opportunity to speak directly with a "Commercial Vehicles" (DOT) patrol officer.

The conversation was rather strained and unfruitful. The officer stated among other things, after first calling a number of people for over 1/2 hour to research my question, she stated:
She has been trooper for over 20 years, straight trucks do not get "energy conservation devices", only semi do, why would I want to install one, they don't save any gas on a straight truck, when I said I disagreed, she said it was a "fact", also stated I was not listening to her because she was a women, she did attempt to educate me as to what an energy conservation device was (which was never the issue), and was rather condescending considering the officers other unsupported statements, and that "energy devices" are only approved by the Department if the original Chassis manufacturer approves them, which I questioned how does that work, because in most cases, the trucks/chassis are built and shipped unfinished without any bodies, to be installed by other vendors?

The officer said it doesn't matter, must be an original chassis manufacturer, which I find preposterous. I asked her if this requirement is retroactive, and what happens if it's on a truck/trailer say from 80's, the officer said it might be grandfathered in in some cases, but she did know which ones.

The system in Florida is clueless.