Modern Railway Systems

What Modern Railway Systems does

Modern Railway Systems (MRS) is a full-service transit systems integrator specializing in three core areas: systems integration, signaling systems, and communications. Founded in 2001 as Rail Systems Solutions and acquired by Stacy Witbeck in 2011, the company delivers turnkey rail infrastructure solutions from conceptual design through installation, testing, and commissioning for transit agencies and railway authorities across the United States. Its proprietary technology stack includes TDX (Train Dispatch Software), first deployed in 2006 on the FrontRunner North commuter rail line and subsequently implemented for multiple clients, and Enhanced Automatic Train Control (E-ATC), with MRS being the first to successfully implement E-ATC in the United States. The company also operates Modern Manufacturing (precision metal fabrications acquired 2015) and Modern Communications Systems (acquired 2017) as vertically integrated subsidiaries.

MRS operates as both systems prime contractor and subcontractor on projects delivered through design-build, CM/GC, progressive design-build, and bid-build procurement methods, with project values ranging from $100 million specialty contractor awards to multi-billion dollar design-build contracts. The company's customer base consists entirely of government transit authorities including DART, Caltrain, SANDAG, Sound Transit, TriMet, CapMetro, Metra, UTA, CATS, Amtrak, Brightline, RTD Denver, LACMTA, SMART, BART, and Valley Metro. Notable projects include the Caltrain Electrification (52-mile corridor), California High-Speed Rail (119 miles), and the $1.5 billion East San Fernando Valley Light Rail Progressive Design-Build project.

The company maintains nine regional offices across the US, is headquartered in Littleton, Colorado, and transitioned to a 100% employee-owned ESOP structure in late 2023. Leadership includes President Paul Rieger (40+ years industry experience) and VP Shon Tulik (nearly 30 years). MRS pursues projects across 20+ states through competitive procurement processes, with most projects involving repeat clients — evidence of strong relationship-based positioning in the public transit infrastructure market. The company is actively expanding its footprint through joint ventures with Stacy Witbeck, Herzog Technologies, and other partners to pursue mega-project opportunities.

Name

Modern Railway Systems

Legal name

Modern Railway Systems

Website

https://modrailsystems.com

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

101–250 employees

Short description

Modern Railway Systems is a full-service transit systems integrator delivering turnkey signaling, communications, and systems integration solutions for US government transit agencies and railway authorities across 20+ states. The 100% employee-owned ESOP operates as both prime and subcontractor on projects ranging from $100M to multi-billion dollars.

Ownership category

akta.pro rank

Product category

Rail Transit Systems Integration

NAICS

Support Activities for Rail Transportation (4882), Support Activities for Rail Transportation (48821), Support Activities for Rail Transportation (488210)

SIC

Services-Computer Integrated Systems Design (7373), Transportation Services (4700), Railroad Equipment (3743)

akta.pro primary industry

Transit Systems Integration & Commissioning (Rail Infrastructure) (IMAFAFAJ)

akta.pro secondary industries

Rail Signaling & Train Control Infrastructure (Interlockings, ETCS/CBTC Wayside) (TLAJADAB), Automatic Train Control / Protection Supervision (ATP/ETCS/PTC Oversight) (TLAJAEAC)

Keywords

• Railroad signaling
• Transit systems integration
• Rail communications systems
• Positive train control
• Rail electrification

Headquarters

HQ city

Littleton

HQ country

United States

HQ region

North America

Offices9 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure

Revenue model

1. Transit Systems Integration Projects: Revenue is generated through large-scale infrastructure projects for transit agencies, including design, procurement, installation, testing, and commissioning of signaling systems, communications systems, and traction power/electrification systems. Projects range from $100 million+ specialty contractor awards to multi-billion dollar design-build contracts. The company operates as both systems prime contractor and subcontractor depending on project scope and delivery method.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Modern Railway Systems is a full-service transit systems provider delivering turnkey solutions for light rail, commuter rail, and high-speed rail projects across the United States. The company integrates systems across three core capabilities—signaling, communications, and systems integration—and operates as both a prime contractor and subcontractor on design-build, CM/GC, progressive design-build, and bid-build projects for transit authorities and railway agencies.

Product overview

Modern Railway Systems is a full-service transit systems provider offering a unified portfolio of core services: Systems Integration, Signaling Systems, and Communications. The company delivers turnkey solutions from conceptual design through installation, testing, and commissioning. Key proprietary products include TDX (Train Dispatch Software), their proprietary communications system, and Enhanced Automatic Train Control (E-ATC) for PTC compliance. The company operates as a systems subcontractor and prime contractor on transit projects nationwide, providing signal systems, communications infrastructure, and electrification systems for light rail, commuter rail, high-speed rail, and bus rapid transit projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Systems Integration
• Signaling Systems
• Communications Systems
• TDX Train Dispatch Software
• Positive Train Control (PTC) Systems

Quantifiable outcome

• Average 4.4 months of testing for streetcar projects vs. 14.3 months industry average before revenue service - demonstrating superior safety certification process expertise

Named customers16 records

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Eleven partnerships are on record, tiered major and core.

• GHDmajorStrategic or Co-development Partner · 1 January 2025Design-Build Team member for SMART Healdsburg Rail Extension. GHD leads all design and engineering services including managing design subcontractors, while MRS leads the rail signaling and communication systems scopes.
• Stacy WitbeckcoreStrategic or Co-development Partner · 1 January 2011Rail Systems Solutions (predecessor) acquired by Stacy Witbeck in 2011, becoming Modern Railway Systems. Stacy Witbeck is the parent company providing construction and infrastructure delivery capabilities. The joint venture Kiewit-Stacy Witbeck-Herzog was formed for California High-Speed Rail Track and Systems Construction Contract.
• Kimley-HorncoreStrategic or Co-development PartnerPartnership for DART Unified Signaling System Project. Modern Railway Systems in association with Kimley-Horn brings together technical expertise with proven delivery to support complex transit modernization efforts. Kimley-Horn leads civil/infrastructure design while MRS handles signaling and communications systems.
• MEC (Mott Electric Canada)majorImplementation/ SI/ Consulting PartnerPartner for traction power substations on Sound Transit projects including Federal Way Link Extension and Downtown Redmond Link Extension. MEC provides traction power substations while MRS handles signaling and communications.
• Stacy Witbeck (SWK) - Joint VenturecoreStrategic or Co-development PartnerJoint venture partner for East San Fernando Valley Light Rail project. The Stacy Witbeck and Modern Railway Systems (MRS) teams are executing the $1.5 billion Progressive Design-Build project using their extensive expertise in complex, urban rail projects.
• Alstom/KB SignalingmajorTechnology or IntegrationPartner for Downtown Redmond Link Extension project for train control system design. MRS partnered with Alstom/KB Signaling for comprehensive train control design while providing signal bungalows and wayside equipment.
• MJG/Rocky Mountain System Services (RMSS)majorStrategic or Co-development PartnerJoint venture partnership for UTA projects including Vineyard Commuter Rail Station and FrontRunner Double Track (FR2X). RMSS delivers comprehensive train control and communications solutions combining MRS and MJG expertise.
• SWK (Stacy Witbeck)coreStrategic or Co-development PartnerPartner for multiple Sound Transit projects including Federal Way Link Extension and Downtown Redmond Link Extension. SWK handles civil construction while MRS provides all systems work including communications, radio, and signal systems.
• Herzog Technologies (HTI)coreStrategic or Co-development PartnerJoint venture partner with Herzog Technologies for California High-Speed Rail project. Modern Railway Systems in a joint venture with Herzog Technologies (HTI) leads installation of rail signaling and communication systems for the nation's first true high-speed rail system.
• HNTBmajorImplementation/ SI/ Consulting PartnerProvided hardware design for CATS terminal operations optimization project. MRS reviewed and updated hardware design, revised train control software, and adjusted field wiring to align with system updates.
• Modern ManufacturingcoreTechnology or IntegrationCustom manufacturer specializing in precision metal fabrications for railroads and transportation systems across North America. Joined the team in 2015 to provide in-house manufacturing capabilities for signal bungalows and other equipment.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Kiewit Infrastructure: Kiewit is a major heavy civil contractor and JV partner of Stacy Witbeck/MRS on California High-Speed Rail. As a broad incumbent with deep pockets, Kiewit shapes competitive dynamics for the same mega-project pipeline MRS targets.
• Alstom: Alstom is a global rail OEM with signaling, communications, and full transit system capabilities. MRS partners with Alstom/KB Signaling on some projects but also competes against Alstom as a systems prime on design-build transit procurements.
• Wabtec Corporation: Wabtec is a large, established rail equipment OEM and systems integrator offering signaling (including GE Transportation legacy products), PTC, and positive train control solutions globally. MRS competes with Wabtec on transit signaling and PTC scopes but Wabtec operates as a much broader portfolio incumbent.
• Hitachi Rail: Hitachi Rail (including the former Ansaldo STS) supplies signaling, train control, and turnkey rail systems globally and is active on several North American transit projects. It overlaps directly with MRS's signaling and communications integration scope but as a much larger portfolio incumbent.
• Siemens Mobility: Siemens Mobility is a global rail OEM offering rolling stock, signaling, and complete transit systems including CBTC and PTC. It competes with MRS on large design-build transit procurements and on signaling equipment procurement decisions for North American agencies.

Direct peers

• Balfour Beatty Rail: Balfour Beatty's rail division delivers signaling, electrification, and systems integration on U.S. transit and commuter rail projects. Like MRS, it competes as a specialty systems contractor on design-build and bid-build rail procurements.
• Stacy Witbeck: Stacy Witbeck is MRS's parent company and a heavy civil and rail contractor delivering design-build transit projects across the U.S. The two share capabilities on rail systems delivery and frequently co-bid JV contracts, putting them on the same competitive playing field for systems-heavy scopes.
• Herzog Technologies: Herzog Technologies is a direct competitor specializing in railroad signaling, communications, PTC, and systems integration for transit and freight rail. Herzog is also MRS's JV partner on California High-Speed Rail, making it the closest functional peer in the U.S. rail systems integration market.
• RailWorks: RailWorks is a specialty rail contractor providing track, signaling, and systems services to transit agencies and freight railroads. Like MRS, it competes for systems integration and signaling scopes on commuter and light rail projects, often as either a prime or subcontractor.

Others

• Mott MacDonald / Hatch (Rail Systems consulting): Engineering consultancies like Mott MacDonald and Hatch provide owner's-engineer and systems integration advisory services to transit agencies. They are not direct competitors for construction but shape procurement specifications and partner/JV opportunities that affect how MRS competes on bids.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Modern Railway Systems