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 (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
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
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)
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 V112 — Motor Freight
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 485112 valid in 2022? ▾
Yes, 485112 is a valid 6-digit 2022 NAICS national industry code representing 'Commuter Rail Systems' under Sector 48-49 in the official classification index.
What is the SBA size standard for NAICS code 485112? ▾
The Small Business Administration (SBA) has established a small business size standard of $47,000,000 for NAICS code 485112 (Commuter Rail Systems), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 485112? ▾
According to official Census Bureau concordance tables, NAICS code 485112 (Commuter Rail Systems) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 4111 - Local and Suburban Transit.
Related Pages & Tools
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.
- NAICS 485112 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Commuter Rail Systems).
- 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.