The over 26,000 lbs requirement is the gross vehicle weight rating. Take a look at the charts I posted earlier. It specifically says 26,000 lbs GVWR. The gross vehicle weight rating (GVWR), or gross vehicle mass (GVM) is the maximum operating weight/mass of a vehicle as specified by the manufacturer including the vehicle's chassis, body, engine, engine fluids, fuel, accessories, driver, passengers and cargo but excluding that of any trailers. In my book, that puts all 390 Berkshires in New York State requiring "R" endorsements. Craig
Finally completed all State visits in August 2011 with a trip to North Dakota.