Glossary
 
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O

• Open Top: a unit with sides but no roof.
• Operating Expense: the cost incident to the actual handling of traffic.
• Operating Ratio: the relation of operating expenses to gross receipts.
• Overage: excess shipment over the quantity believed to have been shipped, or mare than the quantity shown on the shipping document.
• O S & D (Over, Short and Damaged): a term used to describe a shipment that has been damaged or lost in transit or that arrives with more containers than originally shipped.