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NAICS Code· 485112

NAICS 485112: Commuter Rail Systems

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. Cross-References. Establishments primarily engaged in--Show more

NAICS 485112 – Commuter Rail Systems encompasses the operation, maintenance, and support of passenger rail services designed to transport commuters between urban centers and surrounding suburbs during peak travel hours. This sector includes the procurement of rolling stock, signaling systems, track maintenance, station infrastructure upgrades, fare collection systems, and safety compliance services.

$4.4M
Total Obligations (12mo)
33
Awarded Contracts (12mo)
1
Contractors Awarded (12mo)
1
Median Bidders per Award
-16.6%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 485112.

AI Industry Description

NAICS 485112 – Commuter Rail Systems encompasses the operation, maintenance, and support of passenger rail services designed to transport commuters between urban centers and surrounding suburbs during peak travel hours. This sector includes the procurement of rolling stock, signaling systems, track ...

NAICS 485112 – Commuter Rail Systems encompasses the operation, maintenance, and support of passenger rail services designed to transport commuters between urban centers and surrounding suburbs during peak travel hours. This sector includes the procurement of rolling stock, signaling systems, track maintenance, station infrastructure upgrades, fare collection systems, and safety compliance services. In the federal contracting landscape, commuter rail systems are often funded through grants administered by transportation agencies to enhance public transit capacity, reduce congestion, and meet environmental sustainability goals. While primarily state and locally operated, federal support flows through programs administered by the Federal Transit Administration and other DOT components, making this a critical niche within surface transportation infrastructure contracting. No contractor data is available for this NAICS code, indicating limited visibility into prime contractors or subcontractors actively competing for federal awards under this classification. Typically, firms involved may include large infrastructure primes with rail expertise, small businesses specializing in rail signaling or maintenance services, and transit authority-owned entities performing in-house operations. No agency data is available, though federal funding for commuter rail is generally channeled through the Federal Transit Administration, with potential involvement from the Federal Railroad Administration and state departments of transportation receiving federal grants. Demand is driven by capital improvement programs, safety modernization initiatives, and efforts to expand transit access under national climate and equity objectives. The competitive landscape for this NAICS code is characterized by localized procurement structures, with most spending occurring at the state or metropolitan level. Federal opportunities are often tied to grant-funded capital projects rather than direct service contracts, presenting niche opportunities for contractors with expertise in rail systems integration, ADA-compliant station design, and automated train control technologies. Contractors seeking entry should focus on partnering with regional transit authorities and aligning with federal grant cycles under the Bipartisan Infrastructure Law.

Small Business Size Standard

The SBA threshold that decides who can bid NAICS 485112 work as a small business.

$47.0M
Applies to the whole industry code

The SBA cap for this NAICS (13 CFR 121.201). A business at or under it can self-certify as small for work in this code, which is what makes it eligible for a small-business set-aside. The cap is set per NAICS, so the same company can be small in one code and not in another.

13 CFR 121.201, effective January 1, 2026. The SBA revises the table roughly once a year.

Top Contractors

Companies with the highest total award value under NAICS 485112, ranked by dollars won.

Ranked by total awards
CompanyTotal AwardsContracts
WASHINGTON METROPOLITAN AREA TRANSIT AUTHORITY$4.4M33

Competition

How many companies historically bid on federal awards in NAICS 485112, from bidder counts reported on USAspending.

Usually Single-Bid

Half or more of reported awards drew exactly one bidder, usually a sign of incumbent-held work rather than an open field. · 857 reported awards

Median Bidders

1

Per reported award, all-time

Single-Bid Awards

99%

Share of reported awards with one bidder

10+ Bidder Awards

0%

Share of reported awards with 10+ bidders

Reported Awards

857

96% of 894 total awards

Bidder Count Distribution by Fiscal Year

Share of reported awards in each bidder-count bracket per federal fiscal year.

How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.

Industry FamilyCompetitionMedian BiddersSingle-BidBidder MixReported Awards
485112This Code
Commuter Rail Systems
Usually Single-Bid199%
85796% of 894
48511NAICS Industry
Usually Single-Bid168%
7,39486% of 8,608
4851Industry Group
Urban Transit Systems
Usually Single-Bid168%
7,39486% of 8,608
485Subsector
Fewer Bidders246%
42,77784% of 51,021
48Sector
Transportation and Warehousing
Fewer Bidders239%
398,99285% of 469,216

Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.

Related NAICS Codes

Industries similar to Commuter Rail Systems, by shared sector, subsector, and industry group.

Explore contracts across multiple NAICS codes Browse all NAICS Codes

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NAICS 485112 FAQ

Frequently Asked Questions

NAICS code 485112 covers Commuter Rail Systems. 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. Cross-References. Establishments primarily engaged in--

Recently Posted in Commuter Rail Systems

NAICS: 485112
SLED
NOTICE OF UPCOMING SOLICITATION: RAIL OPERATIONS, MAINTENANCE & SUPPORT SERVICES
Solicitation # 25-J-S-105
The Peninsula Corridor Joint Powers Board is initiating a procurement process for Rail Operations, Maintenance, and Support Services under solicitation 25-J-S-105. The scope involves the full operation and maintenance of Caltrain's electrified rail system in California, focusing on safety, reliability, and cost-efficient service delivery. Due to significant financial uncertainty and an average annual operating deficit of 75 million dollars, the agency is extending the current contract with TransitAmerica Services, Inc. through June 30, 2027. This extension ensures service continuity while the agency awaits the outcome of a November 2026 regional transportation funding measure authorized by California Senate Bill 63. The future scale of the contract depends on this funding vote; a successful measure will provide 14 years of funding, whereas a failure will necessitate significant service cuts and a scaled-down RFP. The procurement process is expected to restart in early 2027, with a target transition date to a new contractor by July 1, 2029. Evaluation of proposals will be guided by core principles including safety, reliability, innovation, and partnership. Interested parties must monitor the Agency Procurement Portal for the formal RFP, as the current phase focuses on gathering expressions of interest through a structured submission process with specific page limits for cover letters, firm experience, and feedback.
San Mateo County Transit District Department of San Mateo County Transit District

POSTED

about 1 year ago

DEADLINE

N/A
View Details
NAICS: 485112
Federal
Met. Area Tran Auth. WMATA
Solicitation # JQS-17-OIG-17
The Department of Justice, Office of the Inspector General, plans to award a sole source purchase order to the Washington Metropolitan Area Transit Authority (WMATA) for transportation services covering the greater Washington metro area, including Washington, D.C., Maryland, and Virginia. This action is justified under FAR 6.302-1 and statutory authority 41 U.S.C 253(c)(1), recognizing WMATA as the only responsible source capable of providing comprehensive transit coverage needed by DoJ OIG employees. The sole source award ensures employees have reliable and extensive transportation options to commute to work. While this is not a solicitation and no competitive proposals are being requested, other transportation providers may submit questions or information regarding their capabilities by October 27, 2016, for government consideration. The contract is designated under NAICS code 485112, which covers transit and ground passenger transportation. The designated contracting officer, Christie M. Deskiewicz, is the point of contact for any inquiries or notifications from interested parties. The government's emphasis is on maintaining uninterrupted, efficient transportation access for its personnel through a vendor with unmatched transit reach and service scope within the metropolitan region. This approach reflects both a strategic and practical procurement decision to leverage WMATA's unique service infrastructure.

POSTED

almost 10 years ago

DEADLINE

N/A
View Details

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