CORTHELL TRANSPORTATION LLC
Risk factors
Moderate riskVioCodes scoreA weighted read of the public FMCSA signals below — authority, insurance, out-of-service, crashes, roadside OOS rates, and carrier connections. A starting point for vetting, not a guarantee.
Roadside inspection performance
Out-of-service rate vs national average. Lower is better.
CSA performance breakdown
FMCSA · Sep 202630 inspections · 54 violations (7 OOS) · 20% of inspections had an OOS finding.
Violations by BASIC
click to filter codes
Top cited codes
score = count × severity weight
- 1393.55E-BVehicle Maintenance
Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998
8
2× · sev 4
- 2393.75A3-TAOLVehicle Maintenance1 OOS
Tires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS
8
1× · sev 8
- 3392.2-SLLEWA3
State/Local Laws - Excessive weight - More than 5000 lbs over on an axle/axle groups
7
7×
- 4393.9A-LSLIVehicle Maintenance
Lighting - Stop lamps - Any inoperative.
6
1× · sev 6
- 5392.2DIMNot in SMS
Dimension Violation (Width / Height / Length)
4
4×
- 6393.45B2-BHTDVehicle Maintenance1 OOS
Air Brake - Hose/tubing damage into the outer reinforcement ply.
4
1× · sev 4
- 7392.2-SLLEWA2
State/Local Laws - Excessive weight - 2501-5000 lbs over on an axle/axle groups
3
3×
- 8396.5B-LVehicle Maintenance
Lubrication - Oil or grease leak
3
1× · sev 3
- 9392.2-SLLEWA1
State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups
2
2×
- 10396.5B-HLOWVehicle Maintenance
Hubs - oil and/or Grease Leaking from hub - outer wheel
2
1× · sev 2
Most inspected in · top 8 states
- TX5
- WY4
- CO4
- WA3
- AZ2
- IA2
- ND2
- SD2
Latest FMCSA SMS snapshot. Codes link to the lookup — severity weighting, contest angles, and the DataQs Drafter for each. Click a BASIC to filter the codes.
Safety trends & next-run projection
Where each BASIC sits today, how it ranks against peers, and where it’s heading at the next monthly SMS run.
FMCSA keeps the Crash Indicator percentile private, and its measure needs a power-unit history public data doesn’t expose — so it can’t be estimated yet. VioCodes now records power units monthly, so a calibrated Crash estimate should light up over time. These are the public crash facts (all state-reportable crashes count, regardless of fault).
“Projected” estimates the next monthly SMS run from inspections on record now. FMCSA marks the BASIC percentile itself “Not Public,” so the percentile shown is a VioCodes estimate of how the carrier ranks against its peers, presented as a likely range (shaded on the gauge) and calibrated against real carriers. Crash Indicator has no public estimate — FMCSA keeps its measures fully private. Estimates, not official FMCSA figures. Not affiliated with FMCSA.
Recommendations
What’s driving each score, what to do about it, and where it could go.
Vehicle out-of-service rate exceeds the national average
High impactVehicle OOS rate is 45.5% vs the 22% national average. Carriers above the national OOS average draw more enforcement attention (audits, roadside stops) and can see higher insurance premiums.
- Review recent inspections with out-of-service violations and fix the root causes with equipment and drivers
- Run a preventative-maintenance program; periodically inspect tires, brakes and lights
- Reinforce thorough pre-trip and post-trip inspections; retrain where needed
A high share of violations are occurring in Johnson County, IA
Medium impact13 of 24 violations in the last 12 months (54%) came from inspections in Johnson County, IA. That can mean tougher enforcement there or simply more of your miles run through it — either way it's worth a look.
- Review the inspections from Johnson County, IA to spot recurring issues
- Brief drivers running that lane; consider rerouting around the toughest enforcement corridors where practical
Driver Fitness needs attention
Low impactEstimated Driver Fitness percentile of 0% is under the 80% line. In decent shape, but here's what's driving it.
- Review recent inspections with violations in this BASIC and take remedial action with drivers/equipment
Controlled Substances/Alcohol needs attention
Low impactEstimated Controlled Substances/Alcohol percentile of 0% is under the 80% line. In decent shape, but here's what's driving it.
- Review recent inspections with violations in this BASIC and take remedial action with drivers/equipment
Tires violations are the leading contributor to Vehicle Maintenance
Low impactEstimated Vehicle Maintenance percentile of 74% is under the 80% line. In decent shape, but here's what's driving it.
- 393.75G-TAOWTires - All others, weight carried exceeds tire load limit1× · 16%
- 393.75A3-TAOLTires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS1× · 11%
- 393.100B-CCargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV1× · 19%
- 393.55E-BAir Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 19982× · 8%
- 393.45B2-BHTDAir Brake - Hose/tubing damage into the outer reinforcement ply.1× · 6%
- 393.45B2-B-AIRAir Brake - Hose/tubing damaged or not secured1× · 4%
- 393.9A-LSMLLighting - Side marker lamp(s) inoperative1× · 6%
- 393.9A-LSLILighting - Stop lamps - Any inoperative.1× · 6%
- Gauge and thump every tire on the walk-around, including inner duals
- Replace before tread hits the limit; correct low pressure immediately
- Prioritize the out-of-service items — they carry the heaviest weight
Recommendations are generated from the carrier’s public FMCSA roadside-inspection record. Percentiles and projections are VioCodes estimates, not official FMCSA figures. Informational, not legal advice.
90-day safety improvement plan
What this carrier has struggled with most in the last 90 days — where to focus now.
Based on roadside inspections in the last 90 days, ranked by what recurs most. Informational, not legal advice.
Inspection & crash map
live · FMCSA MCMISEvery inspection and crash on record — hover a point for the summary, click for full detail (codes, severity, CSA points).
CSA points = violation severity weight × FMCSA time weight (3× in the last 6 months, 2× at 6–12, 1× at 12–24). Points are spread within each state — FMCSA records the inspection state, not an exact location. Source: FMCSA MCMIS.
Equipment
VINs via NHTSA48 distinct vehicles seen in this carrier’s roadside inspections.
+ 18 more.
Equipment is inferred from VINs recorded on roadside inspections (FMCSA MCMIS), decoded via the NHTSA vPIC API — it reflects vehicles inspected, not a current fleet roster.
Crash record (US, last 24 months)
Total
2
Tow-away
2
Injury
0
Fatal
0
Company profile
FMCSA censusAUTHORIZED FOR HIRE
- Interstate · 100+ mi17 drivers
- Company officer
- SHERRY CORTHELL
- Operation
- Interstate
- Registered since
- 2010-02-19
- Last MCS-150 update
- 2026-05-20
- Census status
- Active
Fleet: 14 trucks · 14 owned tractors · 35 owned trailers.
Source: FMCSA Company Census File (data.transportation.gov). Fleet and driver counts are self-reported on the carrier’s most recent MCS-150 filing.
Connections
carrier graphThis carrier shares VINs or addresses with 13 other carriers — review the connections below as part of your vetting.
Shared VINs come from FMCSA roadside-inspection records — a vehicle inspected under more than one carrier, often a fleet transfer or trailer interchange. Other links come from the FMCSA census. Shared identifiers are common and often legitimate — treat these as leads to investigate, not proof of wrongdoing.
Activity history
6 events- 05/20/2026MCS-150 update filed
1.3M mi reported (2025)
- 02/24/2011Insurance filed — Great West Casualty Co
Liability (BIPD) — BMC-91X · policy GWP85458A
- 02/24/2011Insurance cancelled — CANAL INSURANCE CO.
BIPD/Primary · policy PIA05513101
- 01/28/2011CONTRACT — INVOLUNTARY REVOCATION
DISCONTINUED REVOCATION (02/23/2011)
- 03/12/2010MOTOR PROPERTY CONTRACT CARRIER — GRANTED
- 02/19/2010Registered with FMCSA
AUTHORIZED FOR HIRE
Merged from FMCSA authority, insurance, out-of-service, and census records.
Operations
Classification
- AUTHORIZED FOR HIRE
Area served
- Interstate
FMCSA safety rating
- Rating
- Not rated
- Type
- Non-ratable review
- Rated
- —
- Last review
- 2022-11-09
MCS-150 registration
- Form date
- 2026-05-20
- Reported mileage
- 1,346,810 mi (2025)
Changes on file
FMCSA census historyJuly, 2022
- Fleet grew to 24 power units
- Drivers grew to 22
January, 2021
First on-record entry — CORTHELL TRANSPORTATION LLC, ROCK SPRINGS, WY
Got a violation you want to contest?
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