TLEX connects US traffic lights

The project will be live on Treat Boulevard in Concord, California. This real-world demonstration is a collaboration with the Contra Costa Transportation Authority (CCTA) and the City of Concord and was made possible with support from the Dutch Enterprise Agency (RVO).

During the one-year live demonstration period, TLEX establishes a real-time, bidirectional connection with Cubic Traffic Light Controllers (TLCs) in accordance with US standards. The first phase of deployment focuses on creating technical prerequisites for connected mobility in a US environment, including intersection topology, real-time data exchange, and automated data quality control.

Building on this foundation, the second phase of the project also explores connected mobility use cases and operational functions, including Green Light Optimized Speed Advisory (GLOSA) / Time-to-Green (TTG), holistic priority and pre-emption, support for management and maintenance processes, and multi-jurisdictional capabilities.

“This project shows what is possible when public agencies, technology providers, and international partners work together on practical connected mobility innovation,” says Tim Haile, Executive Director of CCTA. “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.”

For Monotch, the project marks an important step in bringing its proven TLEX platform capabilities to the US market.

“TLEX already supports large-scale connected mobility ecosystems in Europe. This deployment demonstrates that the same platform approach is adaptable to US standards and infrastructure,” explains Menno Malta, CEO at Monotch. “It proves that any and all road authorities can build on existing traffic infrastructure while preparing for the next generation of connected mobility services.”

The project provides a scalable foundation for future applications such as GLOSA, traffic signal priority, pre-emption, emergency vehicle alerts, and many other connected mobility services.

About Contra Costa Transportation Authority (CCTA)

The Contra Costa Transportation Authority (CCTA) is the county transportation planning agency for Contra Costa County, California. CCTA is responsible for delivering and funding transportation improvements, managing congestion programs, and advancing innovative mobility solutions that improve safety, sustainability, and accessibility. Through partnerships with public agencies, industry, and research organizations, CCTA develops and demonstrates next-generation transportation technologies that help prepare the region for a more connected and efficient transportation system.

About Monotch

Monotch is the company behind TLEX® — the real-time data sharing layer that connects road infrastructure, road users, applications, AI models, and data exchange networks.
TLEX is the proven foundation for connected mobility and digital infrastructure, enabling interoperability and real-time collaboration across the mobility ecosystem.

Founded in 2015, Monotch has rapidly grown into an international leader in smart mobility. Our technology powers scalable, secure, and future-ready mobility solutions — helping public and private partners around the world to connect systems, improve safety, and accelerate innovation.

About Coast2Coast

Coast2Coast is a collaborative initiative that accelerates the deployment of connected vehicle technologies by bringing together public agencies, industry partners, and research organizations in the United States and Europe. Through international collaboration and real-world demonstrations, Coast2Coast helps advance interoperable connected mobility solutions that improve road safety, traffic efficiency, and sustainable transportation.