R L MCNAIR AND SON LLC
AUTHORIZEDUSDOT
451422
MC Number
125283
Fleet Size
21
Total Drivers
9
FMCSA-derived snapshot updated: September 13, 2026. This is not a real-time record; verify critical authority, insurance and safety details directly with FMCSA.
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Safety overview
R L MCNAIR AND SON LLC is a mid-size interstate motor carrier based in EMMITSBURG, Maryland, operating 21 power units with 9 drivers. CarrierOwl is currently validating BASIC percentile display against the official FMCSA SMS portal; use the inspection, out-of-service, crash, authority, and insurance data below as the primary public safety indicators on this page. Their driver out-of-service rate of 3.1% comes in under the 6.7% national average. They have 1 crash on file. FMCSA records show 32 inspections for this carrier.
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BASIC scores
Under reviewCarrierOwl is validating BASIC percentile calculations against the official FMCSA SMS portal. Until that review is complete, use FMCSA directly for current BASIC percentiles and use the inspection, out-of-service, crash, authority, and insurance data on this page as supporting indicators.
BASIC percentile display is temporarily paused while we validate CarrierOwl's methodology against the official FMCSA SMS portal.
Out-of-service rates vs. national average
An out-of-service order means the driver or vehicle was pulled from operation during a roadside inspection.
For reference, the average driver OOS rate in Maryland is 14.4% and the average vehicle OOS rate is 26.1% across 44,063 carriers.
Company details
- Entity Type
- N/A
- Carrier Operation
- Interstate
- Operation Classification
- Authorized For Hire, Private (Property)
- Cargo Carried
- N
- Hazmat
- No
- Safety Rating Date
- N/A
Inspections
32
Total
53%
Driver %
Insurance on file
Liability (BIPD)
SELECTIVE INSURANCE COMPANY OF THE SOUTHEAST — eff. Apr 24, 2019
Cargo
Not on file
Surety Bond
Not on file
Trust Fund
Not on file
Source: Legacy FMCSA. Verify current filings directly with FMCSA before relying on them.
Crash history
1
Total Crashes
Similar carriers in Maryland
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Frequently asked questions
Is R L MCNAIR AND SON LLC authorized to operate?
CarrierOwl's FMCSA-derived snapshot for R L MCNAIR AND SON LLC (USDOT #451422) shows "AUTHORIZED" status. The snapshot lists them as an interstate carrier. Verify the current official record with FMCSA before booking a load.
What is R L MCNAIR AND SON LLC's safety record?
R L MCNAIR AND SON LLC has 32 inspections in CarrierOwl's current imported snapshot and 1 matching crash. They do not show a formal FMCSA safety rating in CarrierOwl's current data. A zero result is limited to the dataset and snapshot window. Verify current BASIC percentiles and crash information directly with FMCSA before relying on them.
How many trucks does R L MCNAIR AND SON LLC operate?
R L MCNAIR AND SON LLC operates 21 power units with 9 drivers on file. That puts them in the mid-size range.
Does R L MCNAIR AND SON LLC transport hazardous materials?
No. R L MCNAIR AND SON LLC does not have a hazardous materials flag in the FMCSA database.
Where is R L MCNAIR AND SON LLC located?
R L MCNAIR AND SON LLC is based in EMMITSBURG, Maryland at 9225 WAYNESBORO PIKE, 21727. Phone: (301) 447-2675.
What are R L MCNAIR AND SON LLC's out-of-service rates?
R L MCNAIR AND SON LLC's driver out-of-service rate is 3.1%, compared with the 6.7% reference shown by FMCSA SMS when checked August 4, 2026. Interpret the difference with inspection volume and verify the current FMCSA record. Their vehicle out-of-service rate is 28.6%, compared with the 23.4% reference shown by FMCSA SMS when checked August 4, 2026. Interpret the difference with inspection volume and verify the current FMCSA record.