The Shift to Density-Based Classification
Historically, the National Motor Freight Classification (NMFC) maintained thousands of commodity-specific item codes with distinct rules based on material composition and trade jargon. In 2025, the National Motor Freight Traffic Association (NMFTA) advanced major docket reforms (notably effective July 19, 2025) transitioning large numbers of legacy commodity items into standardized 13-sub density schedules.
Why Carriers and Shippers Moved to Density
Automated forklift dimensioners and drive-through laser scanners now measure LTL freight in seconds on carrier cross-dock platforms. Density-based classification aligns rating with the physical physics of transportation: LTL trailers cube out (fill their volume) before they gross out (reach highway weight limits). Standardizing classes around density reduces billing disputes and carrier re-class fees.
Current Classification Landscape in 2026
Today, density is the default planning benchmark for general freight. However, shippers must note that NMFTA continues to evaluate commodity groups incrementally. Non-density factors like chemical hazardous status, fragile handling requirements, and high liability (theft exposure) still maintain dedicated classification rules.