MCS-150
The FMCSA registration/update form on which a carrier reports its fleet size, mileage, cargo and contact details; the source of much US census data.
The MCS-150 (Motor Carrier Identification Report) is the form carriers file to obtain and update their USDOT number. It captures power-unit and driver counts, annual mileage, commodities carried, and business contact details.
Carriers must update it every two years (or when details change), so its 'as-of' date is a useful freshness signal — one Fraktix surfaces on every record.
Related terms
DOT number
A unique identifier the U.S. FMCSA assigns to a commercial motor carrier; it's the primary key for tracking a carrier's safety, registration and inspection record.
Power units
The count of self-propelled vehicles (tractors, trucks, buses) a carrier operates — the standard measure of fleet size in FMCSA data.