Food-grade trailers are designed and maintained to maintain product integrity, quality, and safety. The FDA’s Sanitary Transportation rule governs food-grade transportation in the United States. This rule aims to prevent poor practices that create food safety risks during transportation that can lead to foodborne illnesses – such as improper refrigeration, contamination by non-food items,  or cross-contamination. This rule applies to all shippers, receivers, loaders, and carriers transporting food in the United States.