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FMCSA - Federal Motor Carrier Safety Adminstration

CSA - Compliance, Safety, Accountability

Working Together for Safety.


SMS - Safety Measurement System SMS - Safety Measurement System

COBURN SUPPLY COMPANY INC

  • 115058
  • 32
  • 44
  • 72

Safety Rating & OOS Rates AND Licensing and Insurance

As part of FMCSA’s IT modernization strategy, we are in the process of merging our data platforms to make it easier for you to find the information you need. During this transition, please refer to the links below for additional information about this carrier.

Vehicle Maintenance

More Info

On-Road Performance

4.02 How is the measure calculated?

Safety Event Group: 21-100 relevant vehicle inspections

Investigation Results

No Acute/Critical Violations Discovered

Expand Graph

Carrier Measure Over Time

  • Trends

This graph displays a carrier’s measure based on 24 months of on-road performance. Zero indicates the best performance. To see how the measure is calculated click here. To see how the measure relates to percentile click here. Expand for more information.

  • 8
  • 6
  • 4
  • 2
  • 0
  • -2
  • Feb 27
  • Mar 27
  • Apr 24
  • May 15
  • Jun 26
  • Jul 31
  • 2026
  • 2026
  • 2026
  • 2026
  • 2026
  • 2026
  Feb 27 2026 Mar 27 2026 Apr 24 2026 May 15 2026 Jun 26 2026 Jul 31 2026
Measure 4.80 4.51 4.71 4.64 4.40 4.02
Measure 0 0 0 0 0 0

Violation Summary

Vehicle Maint. Violations: 52

Violations Description # Violations # OOS Violations Violation Severity Weight
393.45D-B Air Brake - Audible air leak at a proper connection 3 0 4
393.60(c) Windshield - Damaged or Discolored 3 0 1
396.3(a)1BOS Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination 3 3 0
393.110 Failing to meet minimum tiedown requirements 2 2 1
393.45DLUV Brake Connections with Leaks Under Vehicle 2 0 4
393.47(e) Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt 2 0 4
393.55E-B Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998 2 0 4
393.75A3-TAOL Tires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS 2 2 8
393.95A1 Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. 2 0 2
393.9A-LSLI Lighting - Stop lamps - Any inoperative. 2 0 6
396.17C-PI Operating a CMV without documentation of a periodic inspection 2 0 4
392.9A2-C Cargo - Vehicle components or dunnage not secured 1 1 1
393.104F3-C Cargo - Loose or unfastened tiedown 1 0 3
393.110B3-C Cargo - Insufficient tiedowns (w/o headerboard/blocking) for article(s) of cargo longer than 10 feet 1 1 3
393.11B-CSSRR Conspicuity Systems - Trailers, side retro reflective sheeting inadequate on vehicle manufactured on or after December 1, 1993 1 0 3
393.11LR No Lower rear retroreflective sheeting or reflex reflective materials as required for vehicles manufactured after December 1993 1 0 3
393.11RT Retroreflective material not affixed as required for trailers manufactured after December 1993 1 0 3
393.203C-CBP Cab and Body Parts - Hood not securely fastened 1 0 2
393.205(c) Wheel fasteners loose and/or missing 1 0 2
393.43D-B Brake - Missing or inoperable breakaway braking system on a trailer(s) or converter dolly 1 1 4
393.43DBMA Brake - Breakaway not attached to the towing vehicle 1 1 4
393.45D-BAAL Air Brake - Audible air leak at other than a proper connection 1 1 4
393.48(a) Inoperative/defective brakes 1 0 4
393.48A-BIHE Hydraulic/Electric Brake - Inoperative other than a steering axle. 1 0 4
393.53B-B Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear 1 0 4
393.55(e) No or Defective ABS Malfunction Indicator Lamp for trailer manufactured after 03/01/1998 1 0 4
393.75(a)(3) Tire-flat and/or audible air leak 1 1 8
393.84-FL Floor - Inadequate floor condition 1 0 2
393.95(a) No/discharged/unsecured fire extinguisher 1 0 2
393.9A-LIL Lighting - Identification lamp(s) inoperative 1 0 2
393.9A-LLPL Lighting - License plate lamp inoperative 1 0 2
393.9A-LRLI Lighting - Tail lamp - Any inoperative 1 0 6
393.9A-LSLIWR Lighting - Stop lamps - Both inoperative when required to be on 1 1 6
393.9A-LTSI Lighting - Turn signal - Any inoperative on the rearmost vehicle. 1 1 6
393.9A-LTSIR Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit 1 0 6
393.9B-LRLIWR Lighting - Tail lamp - Both lamps on rearmost vehicle inoperative when required to be on 1 1 6
396.17(c) Operating a CMV without proof of a periodic inspection 1 0 4
396.3(a)(1) Inspection, repair and maintenance of parts and accessories 1 0 2

Inspection History

Vehicle Inspections: 43

Please select to view your Inspection History. You can also sort your data by Date, Report Number, Vehicle Type, etc.

(or)
Report Vehicle Measure = Sum of the Total Weight (TotW) Sum of the Time Weight (TiW)
Inspection Date Number State Plate Number Plate State Type Severity Weight
(SW)
Time Weight
(TiW)
Total Weight
(TotW)
Sum of measure weights Sum of measure weights 192 77 310
TotW TiW
=
310 77
= 4.02
More Info

*** The sum of all violation severity weights (violation weight + out-of-service) for this inspection has been capped at 30.

Investigation Results

Vehicle Maint. Acute/Critical Violations: 0

This carrier has no Vehicle Maintenance Acute/Critical Violations to display.

Summary of Activities

The summary includes information on the 5 most recent investigations and 24 months of inspections and crash history.

  • 9/20/2011 (Non-Ratable Review)
  • 72
    • 47
    • 25
  • : 3

*Crashes listed represent a motor carrier’s involvement in reportable crashes, regardless of the carrier’s or driver’s role in the crash. Continue for details.

Continue for more Crash, Inspection & Investigation Details

Inspection Selection System

As part of FMCSA’s IT modernization strategy, we are in the process of merging our data platforms to make it easier for you to find the information you need. During this transition, please refer to the links below for additional information about this carrier.

Enforcement Cases

(Six years as of 08/21/2026 updated monthly from FMCSA )

No penalties found

Tools/Resources

SMS Methodology How to Improve Request a Data Review
For U.S. DOT# 115058
Complete SMS Profile Carrier History Downloads