Transport Corridor Index
adw.adw_507Returns a 0-100 transport-corridor connectivity score for all 3,222 US counties (highway, rail, and air access scored from federal transport-network data) with connectivity_score, highway/rail/air components, national_percentile, and methodology_version. Call when the user asks how connected a county is by transport, about freight corridors or logistics connectivity, or when timing distribution-center siting, network expansion, or site selection. Updates: on source cadence.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| days | No | Optional: return a daily HISTORY series of the last N days (up to 5 years of real archived data) instead of the current snapshot. History requires Gold tier; without it, the current snapshot is returned. |