I have resisted urges to examine 5-ton and 18-ton and heavier Trucks, ALL prohibited from NY30&7 to NY30&30A T-Junction progressively from 2013 and Jan 2015 to Dec 2015.
The 2,700 pounds (lbs) for Passengers suggested in
The Stretch Limo's Fatal Flaw seems based on a 1960-1962 Survey Average of 150 pounds (lbs).
In my J2 Extrapolation, I have added 0.8lbs for males and 1.5lbs for Females for each of 4-year gaps since the the 3rd Survey (2017-2010). This yields an Average of 190.65lbs and an Estimated 18 Passenger Weight of 3,431.70lbs.
In my J1 Notes on Limo and Passenger Weights, I think that the Maximum (Male) Weight of 233.1lbs should be used for 20 Passengers, totalling 4,462lbs (2.231 tons) towards selecting any Upgraded Braking Systems for a Modified Limo of this 180 inches Stretch. I observed one article in passing that proposed installing 2 extra seats in his Truck Rear, stating his 2 friends intended to use these seats were 230lbs and 300lbs, so my 223.1lbs Maximum for Males (as a Mean Weight) might have jumped up during recent obesity trends.
It seems that the Modified Curb Weight (unladen) and 2.231 tonnage for 20 Passengers has nudged this type of 2001 Ford Excursion plus 180 inches Stretch to a Modified Curb Weight exceeding 5 tons. If NYSDot had reacted to this 'over 5 tons' to treat it as 'EQUIVALENT to a Truck exceeding 5 tons', then this Limousine should have re-routed from NY30&7 along NY7 West to turn left at NY7&30A along NY30A South. I conclude that 'Defective NY30 Warning Signs' [as covered in my Charts A to H] & 'multi-deficient Limo Design / Regulation / Scrutiny', both falling under responsibility of various NYSDot Highway and Vehicle Departments, may be decisive defences in the ongoing Grand Jury Indictment Criminal Cases. The Prestige Limousine Owners might well be in breach of felony charges, but not so much at the level currently pushed for.
In my J3 Notes I have commented briefly on Seat Re-Orientation (to Bench Seats in the 180 inches Section) and Seat Belts (with a link to Wiki on Seat Beats). Some Youtube Videos show examples of Simulated Crash Tests for Ambulance Patients & Paramedics on Bench Seats (with and without Seat Belts), Patients strapped to unsecure Stretchers, Standing Paramedics in Harnesses. An UK 'Fifth Gear' Crash Test (around Dec 2014) shows merely 3 Unbelted Rear Crash Dummies in a Short Limousine on facing seats (2 facing forward, 1 facing rearward with back to bulkhead).