Final answer:
Commodity rates are a type of shipping rate that is based on the type or nature of the goods being shipped, rather than their weight or volume.
Step-by-step explanation:
To facilitate the classification of a large variety of different items being shipped on a single invoice, a traffic manager may want to consider Commodity rates. Commodity rates are a type of shipping rate that is based on the type or nature of the goods being shipped, rather than their weight or volume.
Commodity rates are useful in situations where there are different types of items being shipped, such as a shipment that includes electronics, clothing, and food products. By using commodity rates, the traffic manager can assign each item to the appropriate category and calculate the shipping cost accordingly. This simplifies the invoicing process and allows for more efficient classification of items.