The Food and Drug Administration is proposing new rules to keep food safe while it's transported.
The rules announced Friday are part of a sweeping food safety law signed by President Barack Obama in 2011. They would require many larger companies that ship, hold and otherwise transport food by roads or rail to prevent contamination as the food is moved.
The food safety law attempts to stop contamination from source to market as food is often sent out to hundreds of points in a matter of hours or days. Shippers would have to ensure that food is adequately refrigerated and protected during transport and that vehicles are cleaned between loads.
The FDA proposed new food safety rules for farms and food processing facilities last year.
Explore further: US proposes sweeping new food safety rules (Update)