Transportation and Warehousing › Rail Transportation › Rail Transportation
Sector
Transportation and Warehousing
Subsector
Rail Transportation
Industry Group
Rail Transportation
National Industry (This Code)
Line-Haul Railroads
Source: U.S. Census Bureau 2022 NAICS
Based on SBA Table of Small Business Size Standards (2024)
Size Standard
1,500 employees
Measurement Period
Current count
Standard Type
Employee-Based
Applies To
All contracts under NAICS 482111
Set-Aside Programs
8(a), WOSB, HUBZone, SDVOSB
Certification Required
No (self-certify in SAM.gov)
Size standards are set by the SBA and reviewed periodically. Always verify at SBA.gov before bidding.
The following activities are classified elsewhere in the NAICS system:
NAICS code 482111 — Line-Haul Railroads — is used in SAM.gov to identify businesses whose primary activity falls within this classification. When you add this code to your SAM.gov entity registration, contracting officers searching for vendors in the Rail Transportation space will be able to find your business.
If this code represents your primary business activity, designate it as your primary NAICS code. Your primary NAICS code determines your size standard for any contract solicited under this code. With a size standard of 1,500 employees, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 482111.
NAICS code 482111 is 'Line-Haul Railroads', classified under the Transportation and Warehousing sector (NAICS 48). This U.S. industry comprises establishments known as line-haul railroads primarily engaged in operating railroads for the transport of passengers and/or cargo over a long distance within a rail networ
The SBA defines a small business under NAICS code 482111 (Line-Haul Railroads) as one with 1,500 employees. This size standard determines eligibility for small business set-aside contracts, 8(a), HUBZone, WOSB, and SDVOSB programs in SAM.gov.
To register NAICS code 482111 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 482111 (Line-Haul Railroads) to your NAICS code list. You may designate one code as your Primary NAICS code.
PSC codes commonly used with this NAICS sector
Source: GSA PSC Manual April 2025
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