R L MCNAIR & SON LLC
Risk factors
Low 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 202632 inspections · 44 violations (8 OOS) · 27% of inspections had an OOS finding.
Violations by BASIC
click to filter codes
Top cited codes
score = count × severity weight
- 1393.53B-BVehicle Maintenance
Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear
8
2× · sev 4
- 2393.209D-STBSPVehicle Maintenance1 OOS
Steering - Ball and socket joint has movement greater than 1/8 inch measured with hand pressure
6
1× · sev 6
- 3393.45B2-BHTDVehicle Maintenance1 OOS
Air Brake - Hose/tubing damage into the outer reinforcement ply.
4
1× · sev 4
- 4393.45D-BVehicle Maintenance
Air Brake - Audible air leak at a proper connection
4
1× · sev 4
- 5393.45B2-B-AIRVehicle Maintenance
Air Brake - Hose/tubing damaged or not secured
4
1× · sev 4
- 6396.5B-LVehicle Maintenance
Lubrication - Oil or grease leak
3
1× · sev 3
- 7393.47E
Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt
2
2×
- 8392.2-SLL
State/Local Laws -
2
2×
- 9393.95A1Vehicle Maintenance
Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated.
2
1× · sev 2
- 10392.2-SLLEWG3
State/Local Laws - Excessive weight - More than 5000 lbs over on allowable gross weight
1
1×
Most inspected in · top 2 states
- MD20
- PA10
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 26.7% 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 Frederick County, MD
Medium impact17 of 30 violations in the last 12 months (57%) came from inspections in Frederick County, MD. 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 Frederick County, MD to spot recurring issues
- Brief drivers running that lane; consider rerouting around the toughest enforcement corridors where practical
Speeding violations are the leading contributor to Unsafe Driving
Low impactEstimated Unsafe Driving percentile of 48% is under the 65% line. In decent shape, but here's what's driving it.
- 392.2-SLLS4State/Local Laws - Speeding 15 or more miles per hour over the speed limit3× · 61%
- 392.2-SLLS3State/Local Laws - Speeding 11-14 miles per hour over the speed limit1× · 9%
- Coach the drivers with speeding violations directly — Unsafe Driving points are weighted heavily
- Set and enforce a governed road speed; review telematics/dashcam speed events weekly
Hours-of-Service Compliance needs attention
Low impactEstimated Hours-of-Service Compliance percentile of 0% is under the 65% 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
Drugs / alcohol violations are the leading contributor to Controlled Substances/Alcohol
Low impactEstimated Controlled Substances/Alcohol percentile of 40% is under the 80% line. In decent shape, but here's what's driving it.
- 392.4A-DOSPDrugs/Other Substances - Operate a CMV while in possession.1× · 100%
- Reinforce the testing program and zero-tolerance policy
- Prioritize the out-of-service items — they carry the heaviest weight
Brakes violations are the leading contributor to Vehicle Maintenance
Low impactEstimated Vehicle Maintenance percentile of 67% is under the 80% line. In decent shape, but here's what's driving it.
- 393.53B-BAir Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear5× · 16%
- 393.45B2-B-AIRAir Brake - Hose/tubing damaged or not secured1× · 6%
- 393.45B2-BHTDAir Brake - Hose/tubing damage into the outer reinforcement ply.1× · 6%
- 393.134B-CRHLCRoll-on/Roll-off/Hook Lift Containers - Improper securement of a roll-on/roll-off and hook lift container2× · 18%
- 393.9A-LBLLighting - Backup lamp inoperative1× · 9%
- 393.9A-LCLLighting - Clearance lamp(s) inoperative2× · 3%
- 393.9A-LILLighting - Identification lamp(s) inoperative1× · 2%
- 396.9D2-FTFFailing to correct the violation(s)/defect(s) noted on the roadside inspection report1× · 6%
- 396.5B-LLubrication - Oil or grease leak1× · 3%
- Check brake adjustment and listen for air leaks every pre-trip; put brakes on the PM schedule
- Fix air-loss and warning-light faults before dispatch — don’t “drive it in”
- 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.
- 393.134B-CRHLCRoll-on/Roll-off/Hook Lift Containers - Improper securement of a roll-on/roll-off and hook lift container · OOS
- 393.9A-LBLLighting - Backup lamp inoperative
- 396.9D2-FTFFailing to correct the violation(s)/defect(s) noted on the roadside inspection report
- Carry extra straps/chains and know the working-load-limit math
- Re-check securement in the first 50 miles and at every stop
- 392.2-SLLState/Local Laws -
- Review these violations with drivers and add the fix to your pre-trip and PM routine
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 NHTSA15 distinct vehicles seen in this carrier’s roadside inspections.
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
1
Tow-away
1
Injury
0
Fatal
0
Company profile
FMCSA censusPRIVATE PROPERTY;AUTHORIZED FOR HIRE
- Interstate · <100 mi9 drivers
- Company officer
- TERRY MCNAIR
- Operation
- Interstate
- D-U-N-S
- 621215789
- Registered since
- 1991-07-10
- Last MCS-150 update
- 2026-01-30
- Census status
- Active
Fleet: 21 trucks · 2 owned tractors.
Source: FMCSA Company Census File (data.transportation.gov). Fleet and driver counts are self-reported on the carrier’s most recent MCS-150 filing.
Data change history
Every FMCSA record change we’ve detected — address, fleet size, contacts, MCS-150 — newest first.
Connections
carrier graphThis carrier shares VINs or officers with 2 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
8 events- 01/30/2026MCS-150 update filed
0.7M mi reported (2025)
- 06/04/2019Insurance cancelled — NATIONAL INDEMNITY COMPANY
BIPD/Primary · policy 70APB002957
- 04/24/2019Insurance filed — SELECTIVE INSURANCE COMPANY OF THE SOUTHEAST
Liability (BIPD) — BMC-91X · policy S2420304
- 04/24/2019Insurance replaced — NATIONAL INDEMNITY COMPANY
BIPD/Primary · policy 70APB002957
- 02/18/2019Insurance cancelled — NATIONAL INDEMNITY COMPANY
BIPD/Primary · policy 70APB002302
- 01/22/2019COMMON — INVOLUNTARY REVOCATION
DISCONTINUED REVOCATION (02/14/2019)
- 09/14/2018MOTOR PROPERTY COMMON CARRIER — GRANTED
- 07/10/1991Registered with FMCSA
PRIVATE PROPERTY;AUTHORIZED FOR HIRE
Merged from FMCSA authority, insurance, out-of-service, and census records.
Operations
Classification
- PRIVATE PROPERTY;AUTHORIZED FOR HIRE
Area served
- Interstate
FMCSA safety rating
- Rating
- Not rated
- Type
- —
- Rated
- —
- Last review
- —
MCS-150 registration
- Form date
- 2026-01-30
- Reported mileage
- 743,079 mi (2025)
Got a violation you want to contest?
Use the free AI-powered DataQs Drafter to generate a polished challenge letter — quotes the relevant 49 CFR, predicts your grant chance.