R L MCNAIR AND SON LLC
Book with caution — review signals below
No hard OOS / revoked / uninsured blocker, but elevated risk signals need a human look before booking.
- OOS rate worse than size peers Driver and/or vehicle out-of-service rate is above the peer median.
Plain-text risk summary (print / paste)
TruckCodex risk summary — R L MCNAIR AND SON LLC (USDOT 451422) Verdict: CAUTION Book with caution — review signals below No hard OOS / revoked / uninsured blocker, but elevated risk signals need a human look before booking. Authority / census status: Active Active BIPD limit: $750,000 Officer(s): TERRY MCNAIR (Company officer) Organization: CORPORATION Blockers: (none) Cautions: • OOS rate worse than size peers — Driver and/or vehicle out-of-service rate is above the peer median. On file: • 1 active operating authority • Insurance on file · $750,000 — SELECTIVE INSURANCE COMPANY OF THE SOUTHEAST · 91X • BOC-3 process agent on file — DOTPROCESSAGENTS.COM LLC Source: https://truckcodex.com/usdot/451422/ As of: Jul 18, 2026 Always confirm on FMCSA SAFER and L&I before tendering — TruckCodex mirrors public filings and can lag by up to a day.
TruckCodex · compliance grade
Compliance grade A
Composite of 4/5 scored components (mean 85/100). Expand for per-signal evidence. Heuristic — not an FMCSA rating or legal advice.
A
confidence 80% · 4/5 signals
Compliance grade A
Composite of 4/5 scored components (mean 85/100). Expand for per-signal evidence. Heuristic — not an FMCSA rating or legal advice.
Active census status with no OOS order or revoked authority on file.
Active BIPD/Primary-like policy on file in our insurance history.
Driver OOS 0% vs peer median 0% (neutral). Vehicle OOS 29.6% vs peer median 14.3% (worse). n=49727 same-size ACTIVE peers.
FMCSA has not assigned this carrier a formal safety rating. We do not invent one.
NR reason: No published FMCSA safety_rating.
No BMC-91 insurance-lapse watch classification on file for this USDOT.
TruckCodex compliance grade from authority, BIPD, peer OOS, FMCSA safety rating, and insurance-watch signals. Not legal advice. See methodology. Booking triage on this page: Caution.
Company profile
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InsuranceSELECTIVE INSURANCE COMPANY OF THE SOUTHEASTPolicy effective Apr 24, 2019
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Process AgentDOTPROCESSAGENTS.COM LLCBOC-3 on file
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Operating AuthorityMC125283ACTIVE
Fleet details (MCS-150)
| Vehicle type | Owned | Term leased | Trip leased |
|---|---|---|---|
| Truck tractors | 2 | 0 | 0 |
| Trucks | 19 | 0 | 0 |
Self-reported on the carrier’s Form MCS-150 (FMCSA Company Census).
Accident reports (24 months)
All 11 crashes →| Last 6 months | 6–12 months | 12–24 months | Total | |
|---|---|---|---|---|
| Fatalities | 0 | 0 | 0 | 0 |
| Injuries | 0 | 0 | 0 | 0 |
| Tow-away | 0 | 1 | 0 | 1 |
| Crash reports | 0 | 1 | 0 | 1 |
Reportable crashes from FMCSA MCMIS for the trailing 24 months. Counts may differ slightly from SAFER due to reporting lag.
Inspections (24 months)
All 50 inspections →| Driver | Vehicle | Hazmat | |
|---|---|---|---|
| Inspections | 32 | 32 | 0 |
| OOS inspections | 1 | 8 | 0 |
| OOS percentage | 3.13% | 25% | — |
| National average | 6.67% | 22.26% | 4.44% |
Roadside inspections in the last 24 months. National averages are FMCSA MCSAP reference rates (driver ~6.7%, vehicle ~23.4%, hazmat ~4.4%).
Carrier analysis & narrative context SEO summary, status notes, AI overview, and safety profiles
R L MCNAIR AND SON LLC is a corporation based in EMMITSBURG, MD, registered with the FMCSA under USDOT 451422. The carrier is currently active in FMCSA's records, and has not yet received a formal FMCSA safety rating. MCS-150 self-reporting puts the fleet at 21 power units and 9 drivers, with 50 roadside inspections on file and a peak out-of-service rate of 29.6%. Use this page to verify the carrier's authority and insurance, review its inspection and crash history, and cross-reference live data on FMCSA SAFER before booking a load or onboarding a partner.
Carrier is unrated
FMCSA has not assigned this carrier a formal safety rating. Use the inspection history and BASIC scores below to assess on-road performance.
R L MCNAIR AND SON LLC is a mid-sized fleet, operating 21 power units and 9 drivers, organized as a corporation, based in Emmitsburg, MD. Across 29 roadside inspections in the last 24 months, the fleet recorded a 24.1% out-of-service rate, with 1 reportable crash. BIPD/Primary insurance is on file with NATIONAL INDEMNITY COMPANY, and operating authority is active for common.
29 roadside inspections over the last 24 months, up 81% versus the prior 24 months, concentrated in MD (24) and PA (5), with Level 2 inspections the most common.
24.1% out-of-service rate; led by Vehicle Maintenance (75.0% of violations); top code 393.47E (Slack adjuster defective) cited 9 times.
The fleet comprises 21 power units (mid-sized fleet) and 9 drivers; Peterbilt, Kenworth, and Kenw are the most-inspected makes.
Risk Signals
Out-of-Service rate vs same-size peers FMCSA roadside inspections, % placed out-of-service
Compared against 49,727 ACTIVE carriers operating 10–32 power units (±50% of this carrier's 21 unit fleet).
Inspection Analytics Monthly activity · BASIC mix · state map
Monthly Inspection Activity (24 months)
Violations by BASIC Category
Activity by State
| State | Inspections | OOS | OOS % | Last Inspection |
|---|---|---|---|---|
| Maryland (MD) | 24 | 8 | 33.3% | Jul 6, 2026 |
| Pennsylvania (PA) | 8 | 1 | 12.5% | Jun 30, 2026 |
Vehicle Fleet Top makes and models observed in roadside inspections
| Make | Model | Inspections |
|---|---|---|
| Peterbilt | 26 | |
| Kenworth | 9 | |
| Kenw | 8 | |
| Knnw | 3 |
SMS BASIC Scores FMCSA Safety Measurement System per-BASIC scores
| BASIC | Inspections | Serious | Measure | Percentile | Alert | As Of |
|---|---|---|---|---|---|---|
| Driver Fitness | 1 | — | 0.29 | 0 | — | Jul 13, 2026 |
| Controlled Substances / Alcohol | 1 | — | 0.55 | 1 | — | Jul 13, 2026 |
| Hours of Service | 0 | — | 0.00 | 0 | — | Jul 13, 2026 |
| Unsafe Driving | 7 | — | 2.39 | 2 | — | Jul 13, 2026 |
| Vehicle Maintenance | 13 | — | 5.57 | 6 | — | Jul 13, 2026 |
Higher percentiles indicate worse performance relative to peer carriers. Carriers at or above the FMCSA intervention threshold are marked ALERT.
Recent Inspections (50 rows) View all 50 →
| Inspection # | Date ▼ | State | Level | Station | Vehicle | Violations | Top Codes | OOS |
|---|---|---|---|---|---|---|---|---|
| 88345732 | Jul 6, 2026 | MD | 2 | — |
PETERBILT STRAIGHT TRUCK
|
1 | 393.134B-CRHLC | Yes |
| 88283896 | Jun 30, 2026 | PA | 3 | — |
PETERBILT STRAIGHT TRUCK
|
0 | — | No |
| 87886375 | May 18, 2026 | PA | 2 | — |
KENWORTH STRAIGHT TRUCK
|
1 | 392.2-SLL | No |
| 87856436 | May 13, 2026 | MD | 2 | — |
PETERBILT STRAIGHT TRUCK
|
2 | 392.4A-DOSP, 392.2-SLLEWG3 | Yes |
| 87620520 | Apr 20, 2026 | PA | 1 | WINDSOR TWP PA |
PETERBILT STRAIGHT TRUCK
|
1 | 45B2-B-AIR | No |
| 87288578 | Mar 9, 2026 | MD | 1 | FREDERICK MD |
PETERBILT STRAIGHT TRUCK
|
2 | 393.47E, 393.53B-B | No |
| 87171781 | Feb 25, 2026 | MD | 2 | PARKTON MD |
PETERBILT STRAIGHT TRUCK
|
1 | 393.95A1 | No |
| 87047613 | Feb 11, 2026 | MD | 1 | FREDERICK MD |
PETERBILT STRAIGHT TRUCK
|
5 | 393.209D-STBSP, 396.5B-L, 393.47E | Yes |
| 86825100 | Jan 15, 2026 | MD | 1 | PARKTON MD |
PETERBILT STRAIGHT TRUCK
|
1 | 393.45B2-BHTD | Yes |
| 86725418 | Jan 2, 2026 | MD | 1 | FREDERICK MD |
PETERBILT STRAIGHT TRUCK
|
5 | 396.3A1-BOS, 393.47E, 393.9A-LCL | Yes |
| 86627894 | Dec 19, 2025 | PA | 3 | PA |
PETERBILT STRAIGHT TRUCK
|
2 | 392.2-SLLS4, 392.2-SLLFC | No |
| 86401358 | Nov 18, 2025 | MD | 2 | FREDERICK MD |
PETERBILT STRAIGHT TRUCK
|
2 | 393.60C, 393.9A-LIL | No |
| 86390539 | Nov 13, 2025 | MD | 2 | FINKSBURG MD |
PETERBILT STRAIGHT TRUCK
|
1 | 392.16-D | No |
| 86294612 | Nov 3, 2025 | MD | 2 | EMMITSBURG MD |
PETERBILT STRAIGHT TRUCK
|
3 | 392.2-SLLDL, 392.2-SLLS4, 392.2-SLLEWG1 | No |
| 85869515 | Sep 23, 2025 | PA | 3 | pa-i83-nb-mm-33-newberry-twp---i8 |
PETERBILT STRAIGHT TRUCK
|
0 | — | No |
| 85759171 | Sep 9, 2025 | MD | 1 | CLARKSBURG MD |
KENWORTH STRAIGHT TRUCK
|
3 | 393.75C-TAOTD-LT1/32, 393.47E, 393.53B-B | Yes |
| 85646542 | Aug 27, 2025 | MD | 1 | FREDERICK MD |
PETERBILT STRAIGHT TRUCK
|
6 | 396.3A1-BOS, 393.47E, 383.23A2-LCDLNP | Yes |
| 85416883 | Aug 4, 2025 | MD | 2 | CLARKSBURG MD |
PETERBILT STRAIGHT TRUCK
|
0 | — | No |
| 85083447 | Jun 25, 2025 | MD | 2 | BALTIMORE MD |
KENWORTH STRAIGHT TRUCK
|
0 | — | No |
| 84764122 | May 23, 2025 | MD | 2 | BALTIMORE MD |
PETERBILT STRAIGHT TRUCK
|
0 | — | No |
| 84739002 | May 20, 2025 | MD | 2 | CLARKSBURG MD |
PETERBILT STRAIGHT TRUCK
|
0 | — | No |
| 84685069 | May 15, 2025 | PA | 2 | pa-i83-nb-mm-33-newberry-twp---i8 |
KENWORTH STRAIGHT TRUCK
Ticket: Knnw
|
1 | 392.2-SLLUP | No |
| 84655381 | May 12, 2025 | PA | 2 | — |
PETERBILT STRAIGHT TRUCK
|
3 | 393.134B-CRHLC, 393.75C-TAOTD-LT2/32, 396.17C-PI | Yes |
| 83775205 | Feb 1, 2025 | MD | 2 | FREDERICK COUNTY |
KENWORTH STRAIGHT TRUCK
|
0 | — | No |
| 83698894 | Jan 24, 2025 | PA | 3 | ETTERS PA |
PETERBILT STRAIGHT TRUCK
|
0 | — | No |
Recent Crashes (11 rows)
| Report # | Date ▼ | State | Fatalities | Injuries | Tow | Hazmat | Severity |
|---|---|---|---|---|---|---|---|
| PA507930400X | Aug 26, 2025 | PA | 0 | 0 | Yes | No | Tow |
| WV202304498A | Feb 16, 2023 | WV | 0 | 1 | Yes | No | Injury |
| MD22A0917278 | May 25, 2022 | MD | 0 | 0 | Yes | No | Tow |
| MD20A0727859 | Sep 15, 2020 | MD | 0 | 0 | Yes | No | Tow |
| PA905288900X | May 18, 2019 | PA | 0 | 1 | No | No | Injury |
| MD18A0502064 | Sep 8, 2018 | MD | 0 | 0 | Yes | No | Tow |
| MD16A0255867 | Aug 25, 2016 | MD | 0 | 0 | Yes | No | Tow |
| MD16A0189266 | Jan 14, 2016 | MD | 0 | 0 | Yes | No | Tow |
| PA205909200X | May 3, 2012 | PA | 0 | 1 | Yes | No | Injury |
| MD0911675024 | Nov 10, 2009 | MD | 0 | 1 | Yes | No | Injury |
| MD0006095839 | Jan 9, 1997 | MD | 0 | 0 | Yes | No | Tow |
Authority Records (1 docket)
MC Certificate Documents (1 PDF)
Authority Records (above) are FMCSA docket status and lifecycle events. MC Certificate Documents here are the archived PDF letters for each action — grants, reinstatements, revocations, name changes, and transfers. They are related but not the same dataset: one row per PDF letter, not one file per docket.
Click a row to open that specific letter. Multiple letters per docket are listed separately by action type and date.
| Date | Docket | Action | Authority | |
|---|---|---|---|---|
| Sep 14, 2018 | MC125283-C | CPL | REVOCATION | CPL → |
Insurance Coverage Timeline (4 rows)
Every insurance policy on file, newest effective date first. Amber rows mark BIPD/Primary coverage gaps.
| Insurer | Policy # | Type | Limit | Effective | Cancel | Status |
|---|---|---|---|---|---|---|
| SELECTIVE INSURANCE COMPANY OF THE SOUTHEAST | S2420304 | 91X | $750,000 | Apr 24, 2019 | On file | ACTIVE |
| NATIONAL INDEMNITY COMPANY | 70APB002957 | BIPD/Primary | — | Feb 18, 2019 | Apr 24, 2019 | REPLACED |
| NATIONAL INDEMNITY COMPANY | 70APB002957 | BIPD/Primary | — | Feb 18, 2019 | Jun 4, 2019 | CANCELLED |
| NATIONAL INDEMNITY COMPANY | 70APB002302 | BIPD/Primary | — | Aug 30, 2018 | Feb 18, 2019 | CANCELLED |
Compliance Timeline Merged authority / insurance / enforcement events
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Jun 4, 2019insuranceTERM/CANCL — NATIONAL INDEMNITY COMPANY
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Apr 24, 2019insuranceTERM/REPL — NATIONAL INDEMNITY COMPANY
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Feb 18, 2019insuranceCANCEL — NATIONAL INDEMNITY COMPANY
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Feb 14, 2019
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Sep 14, 2018
Top Stations & Violation Codes Where this carrier gets inspected and what they get cited for
Most-Inspected Stations
| Station | State | Inspections | OOS |
|---|---|---|---|
| CARROLL COUNTY | MD | 5 | 2 |
| FREDERICK MD | MD | 5 | 3 |
| WASHINGTON COUNTY | MD | 4 | 1 |
| BALTIMORE COUNTY | MD | 3 | 0 |
| CLARKSBURG MD | MD | 3 | 1 |
| BALTIMORE CITY | MD | 2 | 0 |
| BALTIMORE MD | MD | 2 | 0 |
| FREDERICK COUNTY | MD | 2 | 0 |
| I-81 | MD | 2 | 0 |
| MONTGOMERY COUNTY | MD | 2 | 0 |
Top Violation Codes Cited
| Code | Description | Category | Cited | OOS |
|---|---|---|---|---|
| 393.9(a) | Inoperable required lamps | Vehicle Maintenance | 5 | 1 |
| 392.2 | Violation of Local Laws - Explain: | Unsafe Driving | 4 | 0 |
| 392.16(a) | Failing to use seat belt (49 CFR) | Unsafe Driving | 2 | 0 |
| 393.134(b)(3) | Rear of container not properly secured | Vehicle Maintenance | 1 | 1 |
| 393.205(b) | Stud/bolt holes elongated on wheels | Vehicle Maintenance | 1 | 1 |
| 393.51 | No or defective brake warning device or pressure gauge | Vehicle Maintenance | 1 | 1 |
| 393.75(c) | Tire-other tread depth less than 2/32 of inch measured in a major tread groove | Vehicle Maintenance | 1 | 0 |
| 393.78 | Wipers - Inoperative / missing / damaged wipers. | Vehicle Maintenance | 1 | 0 |
| 396.17(c) | Operating a CMV without proof of a periodic inspection | Vehicle Maintenance | 1 | 0 |
| 396.5(b) | Oil and/or grease leak | Vehicle Maintenance | 1 | 1 |
Related Records Cross-references to every adjacent page
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Maryland carriers
All carriers based in Maryland
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Emmitsburg carriers
Carriers based in Emmitsburg, MD
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Stations in Maryland
Where this carrier might be inspected
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Docket MC125283
common · ACTIVE · MC
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SELECTIVE INSURANCE COMPANY OF THE SOUTHEAST
91X policy on file
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NATIONAL INDEMNITY COMPANY
BIPD/Primary policy on file
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DOTPROCESSAGENTS.COM LLC
BOC-3 process agent · 86,974 carriers served
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50 inspections
Full roadside inspection history
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11 reportable crashes
FMCSA MCMIS crash log
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Fleet recall search
NHTSA recalls covering this fleet's vehicle years/makes
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File a complaint
Open the FMCSA National Consumer Complaint form for this carrier
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Carrier comparison tool
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Insurance-lapse watch
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How FMCSA safety ratings work
BASIC percentiles and compliance review context
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BOC-3 process agents explained
Why every interstate carrier must file a process agent
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FMCSA compliance filings guide
MCS-150, insurance, and authority filing requirements
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Roadside inspection rights
What drivers and carriers can expect during a stop
How to verify R L MCNAIR AND SON LLC
- Verify USDOT and MC numbers match the carrier's documents. Compare the USDOT number and MC docket on this page to the numbers on the carrier's invoice, rate confirmation, or load-board listing. A mismatch between the carrier's claimed numbers and the registered legal name is the single most common red flag.
- Check active operating authority and insurance status. Confirm the Authority Records show at least one ACTIVE docket for the type of operation you're booking, and that the Active Insurance card lists a current BIPD/Primary policy. A revoked authority or uninsured carrier cannot legally operate.
- Review safety rating and SMS BASIC scores. Check the carrier's FMCSA safety rating (if any) and the SMS BASIC table. A high percentile in any BASIC category — especially Unsafe Driving, HOS, or Vehicle Maintenance — is worth investigating before tendering a load.
- Examine inspection and crash history. Open the Inspection History and Crash History subpages for the full record. Look for patterns: repeat OOS findings on the same unit, multiple crashes in a short window, or violations clustered in one BASIC category.
- Cross-reference real-time data with FMCSA SAFER. For the most current snapshot — within 24 hours of any insurer filing or authority change — click through to the FMCSA SAFER lookup. TruckCodex mirrors SAFER and L&I daily; SAFER itself reflects filings within 24 hours.
Frequently asked questions about R L MCNAIR AND SON LLC
Is R L MCNAIR AND SON LLC an active motor carrier? ▾
What is R L MCNAIR AND SON LLC's safety rating? ▾
How many inspections has R L MCNAIR AND SON LLC had? ▾
What is R L MCNAIR AND SON LLC's out-of-service rate? ▾
Where is R L MCNAIR AND SON LLC based? ▾
Does R L MCNAIR AND SON LLC have valid operating authority? ▾
How many trucks and drivers does R L MCNAIR AND SON LLC operate? ▾
Has R L MCNAIR AND SON LLC had any crashes? ▾
About FMCSA carrier records
Every commercial motor carrier operating in the United States is required to register with the Federal Motor Carrier Safety Administration (FMCSA) and obtain a USDOT number. The USDOT number is a permanent, unique identifier — once assigned, it stays with the carrier for life and is never reissued to another company. Carriers must update their registration every two years on Form MCS-150 to keep their address, fleet size, and operating data current.
Carrier safety data lives in FMCSA's Motor Carrier Management Information System (MCMIS): roadside inspections, crashes, out-of-service findings, and the seven Behavior Analysis and Safety Improvement Categories (BASICs) that make up the SMS scoring methodology. For-hire carriers must also hold operating authority — an MC, FF, or MX docket number — which is separate from the USDOT number and requires continuous insurance and BOC-3 process-agent filings to remain active.
TruckCodex mirrors FMCSA's public SAFER and L&I systems on a daily refresh cycle. Every record on this page reflects what FMCSA has on file. We do not edit or modify carrier data — for real-time confirmation immediately before a transaction, click through to the FMCSA SAFER lookup linked in the related records section above. Safety ratings, when present, come from formal compliance reviews; most active carriers have not been reviewed and are correctly listed as unrated.
Data sources & freshness
TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.
Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.
Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).
Cross-border carrier registry and Canadian recall campaigns where applicable.
TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.