The out-of-service trigger, in the rule's words
49 CFR 385.308(a)(7) subjects a new entrant to expedited action for “an out-of-service rate of 50 percent or more based upon at least three inspections occurring within a consecutive 90-day period.” Three conditions, all at once: at least three inspections, inside one 90-day window, with half or more of them ending in an out-of-service order.
How the rate works out (our arithmetic on the rule):
| Inspections in 90 days | Out-of-service rate | Result |
|---|---|---|
| 3 inspections, 1 out of service | 33% | Under the line |
| 3 inspections, 2 out of service | 67% | Meets 385.308(a)(7) |
| 4 inspections, 2 out of service | 50% | Meets 385.308(a)(7) |
| 5 inspections, 2 out of service | 40% | Under the line |
| 2 inspections, 2 out of service | 100% | Fewer than three inspections: (a)(7) does not apply |
For a small fleet the math moves fast: two bad inspections in one quarter can be enough. The window is any consecutive 90 days, not a calendar quarter.
The seven expedited triggers in 385.308(a)
- Using a driver who does not have a valid CDL, including a falsified, revoked, expired or missing-endorsement license.
- Operating a vehicle placed out of service without taking the corrective action.
- One hazmat reportable incident involving highway-route-controlled Class 7 material, Division 1.1, 1.2 or 1.3 explosives, or a Zone A or B poison inhalation hazard.
- Two or more hazmat reportable incidents involving any other hazardous material.
- Using a driver who tested positive for drugs or alcohol, or refused a test.
- Operating without the insurance Part 387 requires.
- An out-of-service rate of 50 percent or more on at least three inspections in a consecutive 90-day period.
Expedited action means an earlier safety audit, a compliance review, or a written response showing corrective action. A carrier already audited has 30 days to submit evidence of corrective action (385.308(b)). If the audit then finds one of the 16 automatic-failure violations, the audit fails.
Keeping the rate under the line
A roadside out-of-service order is written against the vehicle or the driver. The records that keep both clear:
- Pre-trip and post-trip inspections that catch brakes, lights and tires before a roadside inspector does, and driver inspection reports with every out-of-service defect fixed before the truck moves (396.11).
- A current annual inspection for every truck (396.17).
- Drivers qualified on the day: a valid CDL and a current medical certificate (391.45), and hours of service kept.
Read more on the out-of-service criteria, and watch every new inspection the day it posts to your record.
Worked example: a six-truck carrier in its first year
Illustration, not a customer
In one 90-day window the carrier has four roadside inspections:
- Day 4: clean.
- Day 31: a truck placed out of service for brakes out of adjustment.
- Day 58: clean.
- Day 77: a driver placed out of service, no current medical certificate in hand.
Two of four is 50%: the rate meets 385.308(a)(7). One more clean inspection inside the same window would have kept it at 40%, but the window is set by the dates, not by the carrier.
Where FileFlo does the work
Most compliance tools track a date someone typed in and send a notice. FileFlo does the work behind the date: it reads each document, finds the date, checks it against the rule, files it where the rule wants it and works out what is due next, for every driver and every recurring item. The Radar on your USDOT: one email the day your public FMCSA record changes, a new inspection with violations, an out-of-service order or a rating change. Your gap report names each missing record, the rule that requires it and who owes it, and says which areas do not apply to you and why. Nothing goes out to your drivers until you switch each routine on and choose who hears, how and when.
Sources
Checked
- 49 CFR 385.308, expedited actions, eCFR. Title 49 current as of October 19, 2026
- 49 CFR 385.321, safety audit failure, eCFR
- 49 CFR 396.11 and 396.17, inspection reports and periodic inspection, eCFR
- 49 CFR 391.45, medical certification, eCFR
Questions
What out-of-service rate triggers an expedited safety audit?
50 percent or more, based on at least three roadside inspections within a consecutive 90-day period (49 CFR 385.308(a)(7)). Two out-of-service inspections out of three in 90 days, or two of four, meets it.
What else triggers expedited action for a new entrant?
Under 385.308(a): using a driver without a valid CDL; operating a vehicle placed out of service before it is fixed; one hazmat reportable incident involving highway-route-controlled Class 7 material, Division 1.1 to 1.3 explosives, or a Zone A or B poison inhalation hazard; two or more hazmat reportable incidents with other materials; using a driver who tested positive or refused a test; operating without the required insurance; and the 50 percent out-of-service rate.
What does expedited action mean?
FMCSA can move the new entrant to an expedited safety audit or a compliance review, or require a written response showing corrective action, instead of waiting for the normal audit date (385.308(a)). A carrier that has already had its safety audit must submit evidence of corrective action within 30 days (385.308(b)).
Is this the same as the 16 automatic failures?
No. The 385.308 triggers decide when FMCSA looks early. The 16 violations in 385.321(b) decide whether the audit, once it happens, is failed. Several overlap, such as insurance, CDLs, testing and out-of-service vehicles.