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Motor Carrier Safety Report
DOT #2496282 · COS LLC
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COS LLC

DBA: CASTLE OILFIELD SERVICES

DOT# 2496282 MC# 1376430 Williston, ND Authorized For-Hire
(701) 572-1832 castleoil.bookkeeping@gmail.com 501 48th Ave W, Williston ND 58801
20 power units · all owned 19 drivers
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BASIC Alerts: Driver Fitness
Poor
FRED Score 15.0 / 100
Low confidence
12 yrs history · 8 roadside inspections

FMCSA Live Status

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Fleet & equipment

Power units
20
Drivers · CDL
19 · 14
Annual miles
251k unreliable
Type Own Term Trip Total
Trucks 17 0 0 17
Tractors 3 0 0 3
Trailers 0 0 0 0

Registration

FMCSA Rating
Satisfactory (04-03-2026)
Registered
04-16-2014 (12 yrs)
MCS-150 Update
01-29-2026
FRED Score Date
Nov 08, 2026
Officer
PENNY BROWN

Cargo

Cargo risk score FRED’s estimate from the commodities it hauls Log in
Liquids/Gases Oilfield Equipment
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  • Expected crashes over the next 12 months, against similar fleets
  • What drives the grade: crash history and roadside record
  • Worth a closer look: the flags to ask about, with the questions
  • How it compares with similar fleets, per truck and per mile
  • Cargo risk, and news reports linked to its crashes
  • How the grade is calculated, and its history week by week

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Track record

FMCSA record, Dec 2024 – Apr 2026
Crashes
3
0 fatalities · 2 injuries · 0 tow-aways
Inspections
8
12% clean (no violations)
Vehicle out-of-service
66.7%
4 of 6
Driver out-of-service
50.0%
4 of 8
Violations
58
24 out-of-service
Inspections per quarter With an out-of-service order
Q4 '24: 1 inspections, 1 out of service 1 Q4 '24 Q1 '25: 5 inspections, 3 out of service 5 Q1 '25 Q2 '25: 1 inspections, 0 out of service 1 Q2 '25 Q3 '25: 0 inspections, 0 out of service 0 Q3 '25 Q4 '25: 0 inspections, 0 out of service 0 Q4 '25 Q1 '26: 0 inspections, 0 out of service 0 Q1 '26 Q2 '26: 1 inspections, 1 out of service 1 Q2 '26
How it compares with similar fleets Crashes, inspections and violations per truck and per mile, against fleets like this one Log in

What they get cited for

58 violations · 24 months
  • Vehicle maintenance No alert
    47 · 19 OOS
    Brakes 14 · Lights 9 · Steering & suspension 5 · Tires 4 · Cargo securement 1 · 14 more
  • Driver fitness FMCSA alert
    5 · 2 OOS
    Medical certificate 3 · No valid CDL 2
  • Unsafe driving No alert
    3 · 0 OOS
    Reckless / lane 3
  • Hours of service No alert
    3 · 3 OOS
    No log 3
  • Drugs & alcohol No alert
    0
Out-of-service violations “No alert” = under FMCSA's BASIC intervention threshold

Violations by quarter

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No violation trend data

Crashes

24 months
  • May
    17
    2026
    North Dakota
    Injury · 1 person hurt
    Wet road, daylight, rain, two-way trafficway divided unprotected median.
  • Apr
    15
    2026
    Montana
    Property damage only
    Dark - not lighted, two-way trafficway divided unprotected median.
  • Nov
    18
    2025
    North Dakota
    Injury · 1 person hurt
    Daylight, two-way trafficway divided unprotected median. Citation issued.

Insurance filed with FMCSA

FMCSA record through May 14, 2026 · no change recorded by FMCSA since
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Last on FMCSA's record (May 14, 2026)
$1,000,000 · BERKLEY REGIONAL INSURANCE COMPANY
on record since Mar 4, 2022 · FMCSA minimum $1,000,000
Cargo filing
not required by FMCSA (household-goods motor carriers only); the cargo policy is not on FMCSA's record
36 months to May 14, 2026
  • One liability insurer throughout
  • No gap in filed liability coverage while liability was required
Authority events and every filing FMCSA’s full filing record back to the 1990s, and who else this insurer covers Log in

FMCSA filings only, not a policy audit. Not part of the FRED grade. Wrong or out of date?

Where it happens

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Inspections by state
  • North Dakota (HQ) 5
  • Wyoming 3
How this grade is calculated, and its history The model behind the grade: factors, credibility, peer group and the score week by week Log in
Data sourced from FMCSA. The FRED Score is an analytical opinion and is not an FMCSA safety rating. Unless a motor carrier has received an Unsatisfactory safety rating under 49 CFR Part 385 or has otherwise been ordered to discontinue operations by FMCSA, it is authorized to operate. This information is provided for informational purposes only and should not be the sole basis for any decision. Report generated · fred-score.com/carrier/2496282