The Contra Costa Transportation Authority (CCTA) and Dutch connected-mobility company Monotch have launched a one-year live demonstration on Treat Boulevard in Concord, California, testing whether a traffic-data platform proven at national scale in Europe can run on US traffic signal infrastructure and standards. Announced in early July 2026, the project connects Monotch’s TLEX platform to Cubic traffic signal controllers along the corridor, with support from the City of Concord and the Netherlands Enterprise Agency (RVO). It marks Monotch’s first US reference deployment and is designed to show that existing signal cabinets can become real-time, bidirectional data sources without a hardware overhaul.
Why One Concord Corridor Matters Beyond Its Own Traffic Lights
The demonstration is small in physical footprint but pointed in ambition. It tests whether a connected-mobility model industrialized in Europe can be transplanted into a market with different communication standards, different spectrum rules, and a different procurement culture.
The commercial logic sits in the phrase “existing infrastructure.” US road authorities face pressure to deliver safer, more responsive networks without ripping out the signal controllers they already own and maintain. If a cloud layer can sit on top of installed hardware and turn it into a source of machine-readable data, the economics shift for thousands of agencies that could never justify wholesale replacement.
Adapting a European Data Layer to American Signal Standards
TLEX, short for Traffic Live Exchange, is the real-time data platform Monotch built beneath the Netherlands’ national connected-mobility program. It links road infrastructure, road users, applications, data models, and exchange networks, and in its home market it connects the country’s smart traffic lights to road users and authorities.
The European deployment gives the Concord step its weight. In the Netherlands, TLEX connects more than 1,200 traffic light controllers and over 10,000 traffic lights across upwards of 200 cities and authorities, using European ETSI communication standards. The Concord project must re-point that architecture at US conventions instead, establishing a real-time, bidirectional connection with the corridor’s Cubic controllers in line with American signal standards.
A Two-Phase Roadmap From Data Plumbing to Live Services
The demonstration is structured in two stages, and the sequencing is deliberate. Phase one establishes the technical prerequisites for connected mobility in a US setting, including intersection topology, real-time data exchange, and automated data quality control.
Phase two moves from plumbing to services. It covers green light optimized speed advisory (GLOSA) and time-to-green, signal priority and pre-emption, management and maintenance processes, and multi-jurisdictional operation across agency boundaries.
That order matters because it separates a repeatable connection method from the applications that method enables. If phase one produces a clean, standards-based way to onboard existing controllers, phase two becomes a question of which services to switch on rather than whether the underlying link can be trusted.
Cubic Controllers and the US Standards Question
The vendor layer is where European and American practice diverge most sharply. In the US, signal controllers such as Cubic’s Trafficware line comply with the NEMA NTCIP 1202 database standard, and signal phase and timing data is broadcast to vehicles in the SAE J2735 format alongside intersection MAP geometry.
Bridging NTCIP 1202 controller output into J2735-compatible messages is the practical translation work that connected-vehicle deployments in the US must handle. Getting that conversion right, at low latency and with automated quality checks, is effectively what phase one is stress-testing on Treat Boulevard.
The wider regulatory backdrop adds urgency. The Federal Communications Commission reallocated part of the 5.9 GHz safety band in 2020 and, in late 2024, finalized rules moving the sector from DSRC toward cellular vehicle-to-everything (C-V2X), pushing agencies to rethink how their signals talk to vehicles. A cloud-based, standards-agnostic data layer is one way to insulate agencies from that churn.
The Coast2Coast Route and Dutch Export Strategy
The project did not appear in isolation. CCTA and Monotch are both members of the Coast2Coast (C2C) transatlantic collaboration, which Monotch joined in 2024, and the US deployment grew out of a C2C delegation visit to the Netherlands, where the nationwide TLEX rollout was demonstrated. Officials from the Province of North Holland were among the partners involved on the European side.
RVO’s backing signals a broader Dutch strategy of positioning national mobility technology in export markets. For a company building a US footprint, a first American reference customer with CCTA’s profile carries more weight than a pilot with an unknown agency.
CCTA itself is not an ordinary county body. It plans and funds transportation across Contra Costa County and operates GoMentum Station in Concord, one of the largest secure connected and automated vehicle proving grounds in the United States. Running the TLEX test on public streets rather than inside that closed course signals a move from controlled testing toward municipal deployment.
How the Demonstration Fits a Wider US V2X Build-Out
The Concord test lands as US agencies accelerate connected-vehicle programs at scale. In Arizona, the Maricopa County Department of Transportation recently awarded a contract to secure a 750-intersection V2X network across the Phoenix area, built on SAE J2735 messaging and IEEE 1609.2 security, underscoring how quickly signal priority, pre-emption, and safety messaging are moving from pilots to procurement.
Monotch’s own European track record extends beyond the Netherlands to projects in Belgium, where TLEX underpins the Flanders Mobilidata program across roughly 250 intelligent traffic lights, as well as work in Finland and Sweden. The open question the Concord demonstration seeks to answer is whether that portfolio transfers cleanly onto US controllers and standards.
“This project shows what is possible when public agencies, technology providers, and international partners work together on practical connected mobility innovation,” said Tim Haile, Executive Director of CCTA, in the project announcement. “By demonstrating real-time, bi-directional data exchange with existing traffic signal infrastructure, we are laying the groundwork for safer, smarter and more coordinated mobility services.”
What a Successful Year Would Signal for the Market
For CCTA, a working demonstration would extend a decade of connected and automated vehicle experience from a proving ground onto live public streets. For Monotch, it would convert a European reputation into a US beachhead.
The broader stakes are about risk perception. If a platform hardened across national European networks can run cleanly on American controllers and standards, it lowers the perceived risk for every US agency weighing a connected-mobility program on infrastructure it already owns. That, rather than the length of one boulevard, is why the sector is watching Concord.
