485112 — Commuter Rail Systems
Description
This U.S. industry comprises establishments primarily engaged in operating local and suburban commuter rail systems over regular routes and on a regular schedule within a metropolitan area and its adjacent nonurban areas. Commuter rail is usually characterized by reduced fares, multiple ride and commutation tickets, and mostly used by passengers during the morning and evening peak periods.
Exclusions & Cross-References
- Operating local and suburban mass passenger transit systems using both commuter rail and another mode
- of transport--are classified in U.S. Industry 485111, Mixed Mode Transit Systems;
- Operating stand-alone subway or light rail systems--are classified in U.S. Industry 485119, Other Urban
- Transit Systems; and
- Providing scenic and sightseeing transportation on land--are classified in Industry 487110, Scenic and
- Sightseeing Transportation, Land.
Overview Facts
| NAICS Code | 485112 |
|---|---|
| Industry Title | Commuter Rail Systems |
| SBA Size Standard | $47,000,000 |
| IRS PBA Code | 485110 (rolled-up match) |
| Sectors Hierarchy | Sector 48-49 → 485 → 4851 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 4111 - Local and Suburban Transit (via SIC1987:4111→NAICS1997:485112→2002:485112→2007:485112→2012:485112→2017:485112→2022:485112)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 485112:
- 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.
- 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.
Related Industries in 4851
Frequently Asked Questions (FAQ)
Is 485112 a valid 2022 NAICS code?
NAICS 485112 is 'Commuter Rail Systems', a 2022 U.S. national industry under Sector 48-49 (Transportation and Warehousing); the SBA small-business size standard is $47,000,000.
What is the SBA size standard for NAICS 485112?
The SBA small business size standard for NAICS 485112 is $47,000,000 (based on receipts).
What is the legacy SIC code mapping for 485112?
NAICS code 485112 maps to the legacy 1987 SIC codes: 4111 - Local and Suburban Transit.