PS Protective Service Instructions
To specify mechanical protective service and ventilation instructions
Association of American Railroads (AAR) Protective Service that applies to shipment
Code specifying perishable protective service- rail carriers only
Code specifying the units in which a value is being expressed, or manner in which a measurement has been taken
PS04 is the optimum allowable temperature condition for shipment.
Standard Carrier Alpha Code
PS05 through PS08 are used to specify the station to which the temperature applies. PS05 and PS06 are preferred over PS07 and PS08.
Code (Freight Station Accounting) (AAR Managed Code for Locations)
Free-form text for city name
Code (Standard State/Province) as defined by appropriate government agency
Numeric value of weight
PS09 is the weight of body ice in hundreds.
Code indicating whether or not the shipment was precooled per Association of American Railroads Protective Service Rule 710