The Illinois Department of Transportation (IDoT) has awarded Canadian company Quarterhill a three-year contract worth about $2.5m to install and maintain traffic data collection sites across north-eastern Illinois, including the Chicago metro area.

There is an option to extend the contract for up to ten years.

Quarterhill’s technology will support IDoT’s ability to maintain and expand its traffic monitoring infrastructure across state‑maintained roadways while helping strengthen the data foundation behind safer, more efficient transportation planning and roadway operations across the region.

Quarterhill will work closely with IDoT to install continuous count sites (CCSs) and maintain existing locations, helping ensure traffic data remain accurate, consistent and available for IDoT’s day-to-day operations and long-term planning.

CCSs collect year-round data on traffic volume and vehicle types across Illinois roadways, which is used to design roads, manage pavement and bridges, analyse freight and passenger movement, improve safety, and plan future infrastructure investments. Quarterhill’s technology helps ensure these data can be reliably used across planning, engineering and policy decisions, transforming roadway data into actionable intelligence that helps shape the future of mobility and infrastructure investment across Illinois.

“The future of roadway planning will be driven by reliable, data-informed transportation systems,” said Chuck Myers, CEO of Quarterhill. “Our partnership with IDoT ensures that Illinois has effective traffic data to better support decisions around safety, infrastructure, and overall system performance, supporting a more connected and responsive transportation network for drivers and communities across the state. Furthermore, this contract underscores the momentum Quarterhill is building as it capitalises on a sustained, multi-year global transportation modernisation cycle.”

By maintaining CCS infrastructure and supporting consistent data output, IDoT (idot.illinois.gov) strengthens its ability to integrate traffic information into its reporting and decision-making tools. These capabilities help transportation agencies better understand traffic patterns, manage infrastructure more proactively, and plan investments with greater confidence as transportation demands continue to evolve across the region.

This award builds on Quarterhill’s growing presence in Illinois, following its previously announced work with the Illinois State Toll Highway Authority (Illinois Tollway), and reflects the company’s growing portfolio of long‑term relationships with transportation agencies across North America. In 2026 alone, Quarterhill (www.quarterhill.com) has announced contracts with agencies in Indiana, California, New Jersey and Massachusetts.