The portion of container shipments on railroad that arrived inbound to a particular market during the prior seven days. IRAILMS is broken down between loaded and empty: IRAILMSL and IRAILMSE.
IRAILMS gives the relative importance of a particular geographic regions (e.g., Chicago or Los Angeles) on the inbound railroad containerized trade flows. Graphing IRAILMS over time shows whether inbound container flows from a region are increasing and graphing against ORAILMS shows the net container flows in a particular region.