NAICS Code 485112: Commuter Rail Systems
National industry
SBA small business size standard: $47 million in average annual receipts
Definition
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.
Government contracts for this service: PSC V213 Rail Passenger Service
Code facts
- Part of
-
-
48-49
-
485
-
4851
- 48511
-
4851
-
485
-
48-49
- Contract awards
- 31 In the last 12 months
- Contract obligations
- $5,059,926 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Business activities under NAICS 485112
- Commuter rail systems (except mixed mode)
- Local passenger rail systems (except mixed mode)
- Rail transportation (except mixed mode), commuter
- Railway systems (except mixed mode), commuter
- Suburban commuter rail systems (except mixed mode)
- Urban commuter rail systems (except mixed mode)
Looking for another activity? Search the NAICS code lookup or browse business activities from A to Z.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $974,928 |
| FY2026 | $4,388,349 |
| FY2025 | $5,059,926 |
| FY2024 | $3,075,016 |
| FY2023 | $1,770,891 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Washington Metropolitan Area Transit Authority | $5,363,277 |
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Justice | $4,445,366 | |
| 2 | Department of the Treasury | $93,639 | |
| 3 | Millennium Challenge Corporation | $74,000 | |
| 4 | Federal Mediation and Conciliation Service | $60,360 | |
| 5 | The Institute of Museum and Library Services | $43,200 | |
| 6 | Defense Nuclear Facilities Safety Board | $30,000 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | V213 Rail Passenger Service | $4,686,205 | |
| 2 | AS11 Transportation R&D Services; Surface Transportation, Public Transit, and Rail; Basic Research | $616,712 | |
| 3 |
V229 Transport/ |
$60,360 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | District of Columbia | $5,098,277 |
Shares are of everything obligated under NAICS 485112 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show all 14
Size standard history
Federal Register rules that named this code
From the NAICS codes each rule's amendments to 13 CFR 121.201 name. Rules that print their size standard tables as images aren't listed.
Quick answers
What is NAICS 485112?
NAICS 485112 is Commuter Rail Systems, a national industry in NAICS 48-49, Transportation and Warehousing.
What is the NAICS code for commuter rail systems (except mixed mode)?
The NAICS code for commuter rail systems (except mixed mode) is 485112, Commuter Rail Systems.
What is the NAICS code for urban commuter rail systems (except mixed mode)?
The NAICS code for urban commuter rail systems (except mixed mode) is 485112, Commuter Rail Systems.
What is the NAICS code for local passenger rail systems (except mixed mode)?
The NAICS code for local passenger rail systems (except mixed mode) is 485112, Commuter Rail Systems.
When did the size standard for NAICS 485112 last change?
The most recent Federal Register rule on record that names NAICS 485112 in the SBA's size standards is "Small Business Size Standards: Adjustment of Monetary-Based Size Standards, Disadvantage Thresholds, and 8(a) Eligibility Thresholds for Inflation" (87 FR 69118), published Nov 17, 2022 and effective Dec 19, 2022.
How much do federal agencies spend under NAICS 485112?
Federal contracts under NAICS 485112 obligated $5,059,926 in fiscal year 2025 and $15,269,109 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 485112?
The contractors with the most obligated under NAICS 485112 in fiscal years 2026 and 2027 are Washington Metropolitan Area Transit Authority ($5,363,277).
Which agencies buy the most under NAICS 485112?
The agencies that obligated the most under NAICS 485112 in fiscal years 2026 and 2027 are Department of Justice ($4,445,366), Department of the Treasury ($93,639) and Millennium Challenge Corporation ($74,000).
Which PSC codes are used with NAICS 485112?
The PSC codes with the most obligated under NAICS 485112 in fiscal years 2026 and 2027 are V213 Rail Passenger Service; AS11 Transportation R&D Services; Surface Transportation, Public Transit, and Rail; Basic Research; and V229 Transport/
Where is the work under NAICS 485112 performed?
By place of performance, the states with the most contract obligations under NAICS 485112 over the last 12 months are the District of Columbia ($5,098,277).
What is the latest contract opportunity under NAICS 485112?
The latest contract opportunity under NAICS 485112 is FY25 WMATA Sole Source Requirement, special notice from Offices Boards and Divisions, posted January 4, 2025.
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