Driver OOS Rate Critical
Driver out-of-service rate is 30% — 5.4x the 5.51% national average across 20 inspections.
DBA CASTLE OILFIELD SERVICES
USE WITH CAUTION
Multiple concerns detected — enhanced vetting required.
COS LLC is an established mid-size for-hire carrier (20 units, 19 drivers) based in WILLISTON, ND, operating since 2014. 2 risk signals detected. Driver out-of-service rate is 30% — 5.4x the 5.51% national average across 20 inspections. Additionally, Vehicle out-of-service rate is 40% — 1.9x the 20.72% national average.
What's notable
Driver OOS Rate Critical
Driver out-of-service rate is 30% — 5.4x the 5.51% national average across 20 inspections.
Vehicle OOS Rate Above Average
Vehicle out-of-service rate is 40% — 1.9x the 20.72% national average.
Established Carrier
12 years of continuous active authority with no revocations.
Clean Crash Record
No DOT-reportable crashes over 12 years of operating history.
Actions
ApproveGet notified if this carrier's status changes
Authority revocations, insurance lapses, safety rating changes — free alerts.
Related reading
Contextual guides and tools based on this carrier's safety profile.
Embed your CarrierBrief safety score on your website, email signature, or load board profile.
Disclaimer
Informational only. This data is sourced from FMCSA public records and does not constitute legal advice. Always verify critical information with official FMCSA sources at safer.fmcsa.dot.gov before making business decisions. CarrierBrief Score, Broker Verdict, and all BASIC percentiles shown are proprietary estimates and are not official FMCSA metrics.