Out-of-service (OOS) rate
When a roadside inspection finds violations severe enough that the vehicle or driver cannot legally continue, that inspection ends in an out-of-service result. A carrier's vehicle OOS rate and driver OOS rate are the percentage of its inspections that ended that way.
The benchmark
FMCSA publishes national averages for comparison, and they move. The live tracker has the current national averages for vehicles and drivers. A carrier running far above them is placed out of service at a rate most carriers are not. fleetfax flags a vehicle or driver OOS rate above twice the national average, once the carrier has at least 10 inspections of that kind. See the live national OOS tracker →
The small-sample caveat
Rates from a handful of inspections are noise. A carrier with three inspections and one OOS result isn't "33% OOS" in any meaningful sense, so fleetfax weighs sample size before flagging.
Not the same thing as an OOS order
The OOS rate is a report card on individual inspections. An out-of-service order is a federal shutdown of the whole carrier. Conflating them is one of the most common vetting mistakes; the rate describes performance, the order describes legal status.
fleetfax reads public FMCSA data and is not affiliated with FMCSA or the U.S. Department of Transportation. This page explains terminology; it is not legal advice.
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