What Turner Engineering does

Turner Engineering Corporation (Tenco) is a privately held transportation engineering consultancy founded in 1993 and headquartered in Venice, California, with offices across Los Angeles, the San Francisco Bay Area, the Midwest, the East Coast, and Canada. The firm provides rail and bus transportation equipment and systems engineering, integration, and analysis across wayside train control, traction power, communications, energy storage, and central control, serving commuter, subway, light rail, high speed rail, bus, and automated people mover modes. Its core services span Railcar and Systems Engineering, Wayside Systems Engineering, CBTC, Smart Buses/Streets/ITS, System Safety and Cybersecurity, RAM (Reliability, Availability, Maintainability), EMI/EMC, Energy Efficiency and Storage, Transit Planning, Hi-Tech Product Development, and Fire Life Safety. Tenco has authored US rail transit EMC standards and holds Independent Safety Assessor roles on multi-billion-dollar programs for agencies including BART, LA Metro, NYCT, MBTA, and Caltrain, as well as for global railcar manufacturers such as Alstom, Bombardier, CRRC, Nippon Sharyo, and Mitsubishi Electric.

The company monetizes primarily through project-based professional services engagements — quote-priced consulting contracts, often multi-year, delivered by distributed engineering teams. Its proprietary technology assets include the WESS controller (highest regenerative energy capture of any US ESS), the X-Alert trademarked grade crossing warning service integrated into Google and Apple Maps, the Cloud-Based Transit Signal Priority system using machine learning on historical traffic data, the Connected Bus Display, and the Wayside EMI Detector. In 2025, Tenco launched CityScale, a cloud-based platform extending the firm into recurring ITS software for bus fleet monitoring, TSP, and multi-agency data integration. Go-to-market is direct enterprise field sales targeting transit authorities and equipment OEMs through relationship-based business development and competitive proposal processes, supplemented by industry standards participation and referrals. There are no disclosed funding rounds, parent company, or external institutional investors; ownership remains founder-centric under President David Turner.

Name

Turner Engineering

Legal name

Turner Engineering Corporation

Website

https://turner-engineering.com

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

51–100 employees

Short description

Turner Engineering Corporation (Tenco) is a privately held, 75-person transportation engineering consultancy founded in 1993, providing rail and bus systems engineering, safety, EMC, RAM, and ITS services to transit authorities (BART, LA Metro, NYCT, MBTA, Caltrain) and railcar manufacturers globally.

Ownership category

akta.pro rank

Product category

Rail Transit Engineering Services

NAICS

Engineering Services (54133)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Rail Signaling & Train Control Infrastructure (Interlockings, ETCS/CBTC Wayside) (TLAJADAB)

akta.pro secondary industry

Asset Inspection, Monitoring & Digital O&M (Sensors/SHM, Drones, CMMS/EAM) (TLAJAAAK)

Keywords

• Rail transit engineering
• Transportation consulting services
• CBTC signaling engineering
• EMI EMC testing
• Rail cybersecurity services

Headquarters

HQ city

Venice

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Engineering Consulting Services: Professional engineering consulting services including system and equipment design, engineering, production planning, testing and analysis for rail and bus transportation. Services are project-based and typically delivered to transit authorities and equipment manufacturers on consulting contract basis.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Turner Engineering Corporation (Tenco) provides project-based engineering consulting, integration, and analysis for rail and bus transportation systems and equipment, spanning railcar and wayside systems, CBTC, EMI/EMC, RAM, safety, cybersecurity, energy storage, fire life safety, and transit planning. The company also develops and sells proprietary technology products including the CityScale cloud platform, X-Alert grade crossing warning service, WESS Controller, and Wayside EMI Detector for transit authorities and equipment manufacturers.

Product overview

Turner Engineering Corporation (Tenco) is a high-tech transportation engineering company offering a portfolio of services and proprietary products for rail and bus transportation systems. The company's core services include Railcar & Systems Engineering, Wayside Systems Engineering, Communication Based Train Control (CBTC), Smart Buses/Smart Streets/ITS, System Safety & Cybersecurity, On-time Performance & RAM, EMI/EMC, Energy Efficiency & Storage, Transit Planning & Development, Hi-Tech Product Development, and Fire Life Safety. The company also offers two notable technology products: CityScale, a cloud-based platform for bus fleet monitoring and control with machine learning-based transit signal priority optimization; and X-Alert, a real-time highway-rail grade crossing warning service integrated with major navigation maps. Additional products include the LA Metro Wayside Energy Storage System (WESS) Controller achieving industry-leading energy recovery, the Connected Bus Display (CBD) for driver interface optimization, and specialized EMI detection hardware. The portfolio spans consulting services, proprietary software platforms, and hardware products serving transit agencies, railcar builders, and equipment suppliers.

Differentiator

Problem solved

Functional benefit

Brands

• CityScale: Smart bus and intelligent transportation system platform developed by Turner Engineering for monitoring and control of bus fleets, traffic signal management, and transit data analytics.

Products and services

• Railcar & Systems Engineering Engineering services for rail and bus transportation equipment and systems, including wayside train control, traction power, communications, energy storage, and central control for commuter, subway, light rail, high speed rail, bus, and automated people movers, delivered to transit authorities and equipment manufacturers.
• Wayside Systems Engineering Engineering services for wayside infrastructure systems including advanced train control, communications, traction power, utility power interface, and central systems engineering for rail operators.
• Communication Based Train Control (CBTC) Engineering Engineering services for Communications-Based Train Control (CBTC) and ATC systems, including safety architecture, system integration, safety-critical software development, and Independent Safety Assessment for rail transit authorities.
• Smart Buses, Smart Streets, ITS Services for cloud-based information systems, transit signal priority, real-time traffic data analytics, and wireless connectivity solutions for bus fleet and dispatch operations delivered to transit agencies.
• System Safety & Cybersecurity System safety and cybersecurity programs including threat and vulnerability assessments, penetration testing, safety certification, and cybersecurity advisory services for rail and bus transportation systems.
• On-time Performance & RAM Reliability, Availability, and Maintainability (RAM) program planning and implementation for high speed rail, commuter rail, wayside systems, and railcars to improve on-time arrival performance for transit operators.
• EMI/EMC Engineering Services Electromagnetic compatibility engineering services including EMI/EMC program development, testing, design analysis, and problem resolution for rail and bus systems and equipment.
• Energy Efficiency & Storage Analysis, planning, design, implementation, integration, test, and commissioning of energy storage for rail and electric bus operations, including flywheel, battery, supercapacitor, and gravity systems.
• Transit Planning & Development Transit engineering and planning including line and network modeling, performance goals, CBTC application, electrification planning, bus rapid transit deployment, and environmental impact assessments for transit agencies.
• Hi-Tech Product Development Specification, design, implementation, test, and commissioning of high-tech hardware and software including electronic hardware, control, embedded, internet, and safety-critical software, and test equipment for transportation customers.
• Fire Life Safety Fire Life Safety analysis, design, and certification including fire hazard analyses, tunnel fire analyses, egress calculations, and compliance with NFPA-130, EN 45545, and other fire safety standards for rail transit projects.
• CityScale Cloud-based platform for monitoring and control of bus and dispatch fleets, improving throughput and reducing travel time through architecture, data solutions, hardware and software implementation, and multi-agency service integration; targeted at transit agencies.
• X-Alert Highway-Rail Grade Crossing Warning Trademarked real-time highway-rail grade crossing warning service that feeds grade crossing data to third-party navigation maps such as Google and Apple, providing drivers, pedestrians, and cyclists with warnings as they approach active grade crossings.
• Wayside Energy Storage System (WESS) Controller Controller designed and built by Tenco for the LA Metro Wayside Energy Storage Substation at the Red Line subway MacArthur traction power station, achieving the highest capture of regenerative energy of any energy storage system in the US.

Quantifiable outcome

• WESS controller achieves highest capture of regen energy of any ESS in the US
• +2 more outcomes

Named customers25 records

Segments5 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability1 record

Feature7 records

Partnerships

One partnership is on record.

• CityScaleminorOthersCityScale is a Turner Engineering product/subsidiary focused on smart city transportation solutions, potentially operating as a separate business unit or branded product line.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• LTK Engineering: Specialized US rail transit engineering consulting firm focused on vehicle engineering, systems engineering, and RAM/safety services for transit agencies and railcar builders. Most directly comparable peer given similar niche focus on rail vehicle and systems engineering for the same US transit customer base.
• Systra: Global rail-focused engineering and consulting firm serving transit authorities and rail OEMs on systems integration, RAMS, and infrastructure projects. Direct peer in transit engineering consulting, and notably appears as a Turner Engineering partner/sub on the Sacramento RT EMI project.
• Burns Engineering: US-based engineering firm with a focused rail and transit practice offering systems engineering, vehicle engineering, and safety/EMC services. Closely comparable mid-sized peer serving the same US transit agency and OEM customer base.

Broad incumbents

• WSP: Global professional services firm with a large transit and rail practice offering engineering, program management, and advisory services to the same US transit authorities. Overlaps with Turner on rail systems, CBTC, and EMC advisory scopes but as part of a much broader portfolio.
• AECOM: Large global engineering services firm with a substantial transit and rail practice serving US transit authorities on design, program management, and systems engineering. Competes for the same agency programs and can absorb Turner's niche scopes into broader mandates.
• Jacobs: Major engineering and program management firm with significant rail and transit presence in North America. Competes for advisory and owner's engineering scopes on major US transit capital programs.
• Parsons Corporation: Engineering and defense firm with a transit systems practice serving US rail agencies. Already engages Turner as a subconsultant (BART Traction Power Facility Replacement), making it both a partner and a competitor for full-program scopes.
• Mott MacDonald: Global engineering consultancy with a strong North American rail practice offering systems engineering, electrification, and advisory services. Competes for similar transit agency program scopes as Turner.
• Hatch Associates (Hatch): Global engineering and project management firm with rail transit capabilities including systems integration, RAMS, and electrification advisory. Overlaps with Turner on rail transit engineering advisory scopes.

Emerging players

• TransCore: US transportation technology firm specializing in ITS, tolling, and smart mobility solutions. Adjacent peer to Turner's CityScale and X-Alert smart-bus/grade-crossing product lines, competing for the same transit agency's connected-vehicle and ITS budgets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/turner-engineering-corporation

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Turner Engineering