NAICS 488210 Quarterly Industry Report
Support Activities for Rail Transportation
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 488210Sector: 48Updated: Q1 2026
About This Report
This NAICS 488210 industry profile draws from Census Bureau[7] establishment and employment counts, Bureau of Labor Statistics[8] occupational wage data for support activities in transportation, and SBA[9] size standard thresholds. Fair Market Value updates this report quarterly to reflect new regulatory guidance from the Federal Railroad Administration and shifts in rail traffic volumes that affect demand for support services. Our research team cross-references FRED economic data[10] on hours worked in this industry to provide valuation professionals with current operating benchmarks.
Industry Snapshot
Key metrics for the support activities for rail transportation industry.
Industry Definition & Overview
Support Activities for Rail Transportation (NAICS 488210) encompasses establishments primarily engaged in providing specialized services for railroad transportation, including servicing, routine repair, and maintenance of rail cars; loading and unloading rail cars; and operating independent terminals. This sector serves as the operational backbone for the broader rail freight and passenger networks, performing critical functions that keep rolling stock in service and cargo moving through intermodal transfer points.
Rail support firms range from small independent car repair shops to large terminal operators handling thousands of rail cars daily. Census Bureau data[5] shows approximately 596 businesses and 1,658 establishments operating in this industry, employing over 42,000 workers nationwide. Annual payroll exceeds $2.3 billion, reflecting the skilled labor requirements for heavy mechanical work on locomotives and freight cars. Workers in this field include car inspectors, brake system technicians, coupler mechanics, and terminal switching crews.
Revenue sources include contracted maintenance agreements with Class I railroads, per-car repair fees, switching charges at independent terminals, and transload services at intermodal yards. Capital requirements are high due to the specialized heavy equipment, rail yard infrastructure, and regulatory compliance costs associated with Federal Railroad Administration[6] safety standards. Geographic concentration follows major rail corridors, with clusters in Chicago, Kansas City, Houston, and Los Angeles where interchange traffic is heaviest.
What's Included in This Industry
- Routine inspection and maintenance of rail cars and locomotives
- Loading and unloading freight rail cars at terminals and sidings
- Operating independent railroad terminals and switching yards
- Rail car cleaning, washing, and interior preparation services
- Brake system testing, repair, and certification for rolling stock
- Transloading services between rail cars and trucks at intermodal facilities
- Rail car wheel truing, bearing replacement, and undercarriage repair
- Track maintenance and signal system servicing at terminal facilities
- Weighing, measuring, and inspection services for rail freight shipments
- Emergency rail car repair and rerailing services along mainline corridors
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Subsector | Support Activities for Transportation | 488 |
| Industry Group | Support Activities for Rail Transportation | 4882 |
| NAICS Industry | Support Activities for Rail Transportation | 48821 |
| National Industry | Support Activities for Rail Transportation | 488210 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 482111 | Line-Haul Railroads | Line-haul railroads that generate primary demand for rail car servicing, maintenance contracts, and terminal switching operations provided by support firms |
| 482112 | Short Line Railroads | Short line and regional railroads that outsource rolling stock maintenance and terminal operations to independent support service providers rather than maintaining in-house shops |
| 336510 | Railroad Rolling Stock Manufacturing | Railroad rolling stock manufacturing firms that perform factory-level overhaul and rebuilding work excluded from routine repair services classified under this code |
| 532411 | Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing | Commercial rail transportation equipment rental and leasing companies that provide rail car fleets requiring ongoing maintenance and servicing by support establishments |
| 488510 | Freight Transportation Arrangement | Freight transportation arrangement firms that coordinate intermodal transfers at rail terminals where loading, unloading, and switching services are performed |
| 488490 | Other Support Activities for Road Transportation | Other road transportation support activities including truck terminal operations that interface with rail intermodal yards for freight transfer services |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | Texas | 13.8% | 243 |
| 2 | Illinois | 6.4% | 113 |
| 3 | Ohio | 6.0% | 106 |
| 4 | California | 6.0% | 106 |
| 5 | Georgia | 5.0% | 87 |
| 6 | Florida | 4.4% | 77 |
| 7 | Utah | 3.6% | 64 |
| 8 | Pennsylvania | 3.5% | 61 |
| 9 | Alabama | 2.9% | 51 |
| 10 | Louisiana | 2.8% | 49 |
% Of Establishments
0%
14%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
32
Total SBA Loans
$30.0M
Total Loan Volume
$938K
Average Loan Size
14 yrs
Average Loan Term
10.13%
Average Interest Rate
832
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: Under SBA size standards[9], NAICS 488210 businesses qualify as small with average annual receipts up to $34 million. Rail support operations are eligible for SBA 7(a) loans[11] to finance rolling stock repair equipment, terminal upgrades, and working capital needs. The 504 loan program[12] supports acquisition of heavy maintenance equipment, rail yard real estate, and facility construction. Many independent rail service firms carry substantial accounts receivable from Class I railroads, making SBA working capital lines particularly relevant for cash flow management.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | Simmons Bank | 16 | $23.4M | $1.5M |
| 2 | Newtek Bank, National Association | 8 | $6.0M | $750K |
| 3 | Northeast Bank | 8 | $640K | $80K |
Frequently Asked Questions
Common questions about this industry.
What types of businesses are classified under NAICS 488210?
Businesses classified under NAICS 488210 include independent rail car repair shops, terminal switching operators, rail car loading and unloading services, transload facility operators, and rail car cleaning and preparation companies. These firms perform routine servicing and maintenance rather than factory-level rebuilding, which falls under NAICS 336510[13].
How is NAICS 488210 structured within the broader transportation sector?
NAICS 488210 sits within Subsector 488 (Support Activities for Transportation) and specifically covers rail-related support services. It excludes the railroads themselves (482111, 482112), rolling stock manufacturing (336510), and rail car leasing (532411). Independent terminal operations fall here rather than under the railroad codes, distinguishing service providers from carriers.
What is the SBA size standard for NAICS 488210?
The SBA sets the size standard[9] for NAICS 488210 at $34 million in average annual receipts. Firms below this threshold qualify as small businesses for federal contracting preferences and SBA loan programs. This revenue-based standard applies to the five-year average of gross receipts including all affiliated entities.
What NAICS codes are most closely related to 488210?
Closely related codes include 482111 (Line-Haul Railroads, Freight), 482112 (Short Line Railroads), 336510 (Railroad Rolling Stock Manufacturing), 532411 (Rail Equipment Rental and Leasing), and 488510 (Freight Transportation Arrangement). The key distinction is that 488210 covers support services rather than transportation operations or equipment production.
What industries have the strongest business relationships with rail support services?
Class I railroads (482111) are the dominant customers, contracting out routine car maintenance, terminal switching, and emergency repair work. Short line railroads (482112) also rely heavily on independent support providers. Freight brokers (488510) and general warehousing firms (493110) interact at intermodal transfer points where rail support services manage loading and unloading operations.
What activities are included in NAICS 488210?
Included activities cover rail car inspection and routine repair, brake system testing, wheel truing, loading and unloading freight cars, operating independent switching terminals, transload services, and rail car cleaning. Factory overhaul or rebuilding of rolling stock is excluded per Census Bureau classification guidelines[14].
Are NAICS 488210 businesses eligible for SBA loans?
Yes, rail support businesses meeting the $34 million size standard can access SBA 7(a) loans[11] for equipment, working capital, and business acquisition. The 504 loan program[12] is well-suited for purchasing heavy maintenance equipment and rail yard real estate, which are typical capital expenditures in this industry.
Where are NAICS 488210 businesses geographically concentrated?
Rail support operations cluster along major freight rail corridors and at key interchange points. Census Bureau data[5] indicates heavy concentration in Chicago (the nation's largest rail hub), Kansas City, Houston, and Los Angeles, where multiple Class I railroads converge and intermodal transfer volumes are highest.
Sources & References
Government datasets and editorial sources used in this report.
- [1]U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages bls.gov
- [2]U.S. Census Bureau, Economic Census census.gov
- [3]U.S. Census Bureau, County Business Patterns census.gov
- [4]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [5]Census Bureau data data.census.gov
- [6]Federal Railroad Administration railroads.dot.gov
- [7]Census Bureau data.census.gov
- [8]Bureau of Labor Statistics bls.gov
- [9]SBA sba.gov
- [10]FRED economic data fred.stlouisfed.org
- [11]SBA 7(a) loans sba.gov
- [12]504 loan program sba.gov
- [13]NAICS 336510 census.gov
- [14]Census Bureau classification guidelines census.gov
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