HaulerCheck · https://haulercheck.com/carrier/451422-r-l-mcnair-son-llc/ · Checked 2026-10-20 16:59 UTC · Census and inspections Oct 20, 2026 · Authority and insurance: Last known · FMCSA snapshot May 14, 2026
R L Mcnair & Son LLC
No risk signals in the last-known data
How risk signals workNothing in the FMCSA record matched our risk signals. That is not a guarantee, and it does not confirm who you are talking to; follow the checks below. Authority and insurance are last known from May 14, 2026.
No cargo cover filed with FMCSA
Not a live check. FMCSA has not published a Motus record for this carrier, so authority and insurance show the last known status from May 14, 2026. Confirm on Motus before booking.
What to verify next
- Confirm authority and insurance on the official Motus record: our copy is the last known status from May 14, 2026. Safety record: SAFER.
- Call back on the number on file, (301) 447-2675, not a number from an email or load board.
- Check that the MC number you were given is MC125283.
- Ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Insurance on file
Liability (BI&PD) pays for injury and damage to other people and property; it does not cover the freight. Cargo insurance covers the freight. FMCSA only requires cargo filings from household goods carriers and freight forwarders, so most carriers file none: ask for a cargo certificate that fits your load. No cargo cover filed with FMCSA.
| Type | Docket | Layer | Insurer | Coverage | Effective | Status |
|---|---|---|---|---|---|---|
| Liability (BI&PD) | MC125283 | Primary | Selective Insurance Company of the Southeast Policy S2420304 · BMC-91X | $750,000 | Apr 24, 2019 | Active |
Source: Last known · FMCSA snapshot May 14, 2026. Identical filings repeated in the FMCSA data are shown once; a filing listed under two dockets is one policy, not extra coverage. Coverage is the maximum amount filed with FMCSA, not the full policy.
Last known filings. Insurance for this carrier comes from the FMCSA snapshot of May 14, 2026. Policies may have been cancelled or replaced since. Confirm current filings: Motus record and ask the insurer for a certificate naming you as holder.
Roadside inspections Oct 20, 2024 – Oct 20, 2026
8 of 29 · Maryland avg 20.8%
1 of 33 · Maryland avg 9.4%
By quarter inspections and vehicle out-of-service rate
Bar height: inspections in the quarter. Percentage: vehicles put out of service, of vehicle inspections. The first and last quarters are partial.
Where it was inspected 2 states and provinces, 24 months
- MD 23 69.7%
- PA 10 30.3%
Vehicles seen at inspections different VINs, 24 months
Power units: 13
13 straight trucks
Kenworth 11Peterbilt 10
21 power units declared on the MCS-150. Inspections see only part of a fleet, so fewer here is normal; many more can mean the registration is out of date.
10 most recent inspections
| Date | State | Level | Violations | Out of service |
|---|---|---|---|---|
| Sep 6, 2026 | MD | 2 | 0 | No |
| Aug 29, 2026 | MD | 2 | 0 | No |
| Aug 27, 2026 | PA | 2 | 1 | No |
| Aug 10, 2026 | PA | 2 | 2 | No |
| Jul 6, 2026 | MD | 2 | 1 | Yes |
| Jun 30, 2026 | PA | 3 | 0 | No |
| May 18, 2026 | PA | 2 | 1 | No |
| May 13, 2026 | MD | 2 | 2 | Yes |
| Apr 20, 2026 | PA | 1 | 1 | No |
| Mar 9, 2026 | MD | 1 | 2 | No |
How these rates are calculated
Period: Oct 20, 2024 – Oct 20, 2026. Vehicle rate = vehicle inspections with a vehicle out-of-service order ÷ vehicle inspections (levels 1, 2, 5 and 6). Driver rate uses levels 1, 2, 3 and 6. The Maryland average covers 42,334 vehicle and 51,684 driver inspections of all Maryland-based carriers in this period. It mixes every type of operation, so compare with care; rates based on a handful of inspections say little. FMCSA's own SMS measures are weighted differently: SMS profile · SAFER snapshot
Violations in FMCSA's SMS last 24 months
41 violations counted in FMCSA's Safety Measurement System (SMS), 9 of them serious enough to put the driver or vehicle out of service.
Why is this different from the 49 violations above?
The inspections section's number counts every violation written on the inspection reports in our Oct 20, 2024 – Oct 20, 2026 window. The SMS count comes from FMCSA's own monthly SMS snapshot, which uses its own 24-month window and only the violations it scores. Both are FMCSA figures; they measure different things.
| Category (FMCSA BASIC) | Violations | Out of service | Share | Maryland share |
|---|---|---|---|---|
| Vehicle Maintenance | 32 | 8 | 78.0% | 71.4% |
| Unsafe Driving | 7 | 0 | 17.1% | 10.9% |
| Controlled Substances/Alcohol | 1 | 1 | 2.4% | 0.4% |
| Driver Fitness | 1 | 0 | 2.4% | 6.6% |
10 most frequent violations
| Violation | Times | Out of service |
|---|---|---|
| Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt Brakes Out of Adjustment · Vehicle Maintenance · code 39347E | 6 | 0 |
| Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear Brakes All Others · Vehicle Maintenance · code 39353BB | 5 | 0 |
| State/Local Laws - Speeding 15 or more miles per hour over the speed limit Speeding 4 · Unsafe Driving · code 3922SLLS4 | 3 | 0 |
| Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination Brake Out Of Service · Vehicle Maintenance · code 3963A1BOS | 2 | 2 |
| Roll-on/Roll-off/Hook Lift Containers - Improper securement of a roll-on/roll-off and hook lift container Improper Load Securement · Vehicle Maintenance · code 393134BCRHLC | 2 | 2 |
| Lighting - Clearance lamp(s) inoperative Clearance Identification Lamps/Other · Vehicle Maintenance · code 3939ALCL | 2 | 0 |
| Drugs/Other Substances - Operate a CMV while in possession. Drugs · Controlled Substances/Alcohol · code 3924ADOSP | 1 | 1 |
| Air Brake - Hose/tubing damage into the outer reinforcement ply. Brakes All Others · Vehicle Maintenance · code 39345B2BHTD | 1 | 1 |
| Steering - Ball and socket joint has movement greater than 1/8 inch measured with hand pressure Steering Mechanism · Vehicle Maintenance · code 393209DSTBSP | 1 | 1 |
| Suspension - A spring leaf is missing or separated Suspension · Vehicle Maintenance · code 393207CSSLMS | 1 | 1 |
Source: FMCSA SMS violation file, inspections in the last 24 months, published Oct 20, 2026. "Share" is this company's mix of violations; the Maryland column is the mix across all Maryland-based carriers, so you can see which kinds of problems stand out. A high count partly reflects fleet size and how often trucks are inspected.
Crashes Oct 20, 2024 – Oct 20, 2026
Crash details
| Date | Location | Fatalities | Injuries |
|---|---|---|---|
| Aug 26, 2025 | Greencastle, PA | 0 | 0 |
Reportable crashes do not imply the carrier was at fault.
Company details FMCSA census · Oct 20, 2026
| USDOT number | 451422 |
|---|---|
| MC / docket | MC125283 |
| Legal name | R L MCNAIR & SON LLC |
| Operation | Interstate |
| Business type | Corporation |
| Power units | 21 |
| Drivers | 9 |
| Annual mileage | 743,079 (2025) |
| Hazmat | No |
| Safety rating | Not rated (no compliance review on record) |
| USDOT number added | Jul 10, 1991 · 35 years ago |
| Last MCS-150 update | Jan 30, 2026 |
| Email domain on file | @gmail.com (free email service) |
Equipment as declared on the MCS-150
| Owned | Term-leased | |
|---|---|---|
| Tractors | 2 | 0 |
| Straight trucks | 19 | 0 |
Term-leased equipment usually belongs to owner-operators driving under this company's authority.
Cargo carried
General Freight
Change history
No changes to name, contact details, authority or insurance since we started tracking on Oct 18, 2026. We compare every company's FMCSA record each day.
to see it on your watchlist when something changes.
Questions about R L Mcnair & Son LLC
What does R L Mcnair & Son LLC's operating authority allow?
MC125283: Common carrier (may haul regulated property for hire for the general public).
Which information about R L Mcnair & Son LLC is old or missing?
Operating authority is the last known status from the FMCSA snapshot of May 14, 2026, not a current check. Insurance filings are from the same May 14, 2026 snapshot. FMCSA has not issued a safety rating, which means no compliance review is on record, not that the carrier is unsafe.
What should I verify before booking R L Mcnair & Son LLC?
Confirm the authority and insurance on the Motus record for USDOT 451422. Call the company back on the phone number on file, (301) 447-2675, not a number from an email or load board message. Check that the MC number the dispatcher gave you matches MC125283, and ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Other trucking companies in Emmitsburg, MD →
Company details from the FMCSA Company Census File (Oct 20, 2026). Inspections and crashes from FMCSA MCMIS files. About our data · Report an error on this page (how corrections work).
Page generated 2026-10-20 16:59 UTC.