A monthly read on the carrier base beneath the freight economy — entries, exits, and stress. Published by Substradium.
Freight markets are read from the demand side — rates, tenders, volumes. The Substrate reads the other layer: the carrier base itself. Who is entering, who is quietly ceasing to operate, and what the official record said on each date. It is written from Substradium's own dated copies of public federal and state carrier records.
The count of carriers past 45 days of uncured authority suspension, read as an exit gauge. Aggregates only; never carrier names.
The Substradium CEI is a monthly series of carrier exits reconciled against insurance filings and authority events; its definition is in the methodology.
Fleet growth and contraction across the 30 cargo classifications represented by the census flags, from the federal carrier census.
What the public federal record reports about insurance filings, cancellations and switching. A filing on record is not evidence that coverage was in force on any date.
For lenders, insurers, factors, dealers, and anyone else with money at stake in whether a carrier is still operating. Free to read at launch.
One issue a month. No carrier names, no scores — the read, with receipts.