In the world of traditional metrics of economic activity, there are few indicators that are more important than the volume of freight moving through a nation.
Perhaps one of the most notable metrics to quantify these days is the Cass Freight Index, which has been producing data since 1955.
The Cass Freight Index – Shipments subindex is particularly useful, as it is simply the number of freight loads being moved across the United States relative to 1990 levels.
