488210 — Support Activities for Rail Transportation
Description
This industry comprises establishments primarily engaged in providing specialized services for railroad transportation, including servicing, routine repairing (except factory conversion, overhaul, or rebuilding of rolling stock), and maintaining rail cars; loading and unloading rail cars; and operating independent terminals (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- Providing railroad car rental--are classified in U.S. Industry 532411, Commercial Air, Rail, and Water
- Transportation Equipment Rental and Leasing;
- Factory conversion, overhaul, or rebuilding of railroad rolling stock--are classified in Industry 336510,
- Railroad Rolling Stock Manufacturing; and
- Providing rail car janitorial services--are classified in Industry 561720, Janitorial Services.
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 4013 - Railroad Switching and Terminal Establishments (via SIC1987:4013→NAICS1997:48821→2002:488210→2007:488210→2012:488210→2017:488210→2022:488210)
- SIC 4741 - Rental of Railroad Cars (via SIC1987:4741→NAICS1997:48821→2002:488210→2007:488210→2012:488210→2017:488210→2022:488210)
- SIC 4789 - Transportation Services, NEC (via SIC1987:4789→NAICS1997:48821→2002:488210→2007:488210→2012:488210→2017:488210→2022:488210)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC M1BD — OPERATION OF AIRPORT RUNWAYS AND TAXIWAYS
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 488210 valid in 2022? ▾
Yes, 488210 is a valid 6-digit 2022 NAICS national industry code representing 'Support Activities for Rail Transportation' under Sector 48-49 in the official classification index.
What is the SBA size standard for NAICS code 488210? ▾
The Small Business Administration (SBA) has established a small business size standard of $34,000,000 for NAICS code 488210 (Support Activities for Rail Transportation), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 488210? ▾
According to official Census Bureau concordance tables, NAICS code 488210 (Support Activities for Rail Transportation) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 4013 - Railroad Switching and Terminal Establishments, 4741 - Rental of Railroad Cars, 4789 - Transportation Services, NEC.
Related Pages & Tools
Further regulatory reference links for NAICS code 488210:
- Sector 48-49 Directory Hub — List of related industries in the Transportation and Warehousing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 488210 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Support Activities for Rail Transportation).
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.