Detection Turn On
Field commissioning and calibration for vehicle and pedestrian detection, including video and radar zone setup, loop verification, sensor alignment, and controller call confirmation before traffic operations go live.
TCC supports reliable Vehicle Detection Systems for agencies, DOTs, contractors, and consultants managing signalized intersections and arterial corridors. From product selection and turn-on calibration to audits, troubleshooting, repair, and training, Traffic Control Corporation helps keep vehicle calls accurate, controller inputs dependable, and traffic operations responsive across demanding public infrastructure environments.

Support for selecting, commissioning, auditing, repairing, troubleshooting, and training on modern vehicle detection technologies.
Field commissioning and calibration for vehicle and pedestrian detection, including video and radar zone setup, loop verification, sensor alignment, and controller call confirmation before traffic operations go live.
Scheduled inspections find silent failures such as failed loops, drifting video zones, misaligned radar, and dirty camera optics so agencies can prioritize recalibration or replacement.
Bench-level diagnosis and repair for video processors, cameras, radar units, and loop amplifiers, followed by recalibration and functional verification against expected detection output.
Pre-purchase consulting helps agencies and engineers match detection equipment to intersection geometry, existing cabinet constraints, project specifications, and long-term maintenance requirements.
Reactive field diagnostics isolate whether a detection issue comes from hardware, programming, wiring, cabinet inputs, controller behavior, or an upstream communications problem.
Targeted instruction on purchased or deployed detection equipment gives agency technicians practical knowledge for maintaining controllers, sensors, processors, and related systems after installation.

TCC helps agencies and consulting firms evaluate intersection geometry, existing cabinet type, detection goals, and project specifications before equipment is selected. This reduces compatibility issues and supports practical long-term maintenance.
Agencies and contractors rely on TCC for practical support across complex traffic control environments.
TCC combines long-standing traffic control experience with practical support for fielded detection systems.
TCC has supported transportation technology since 1946, helping agencies adapt to changing traffic demands.
A Midwest footprint supports agencies across eleven states with regional offices and local service knowledge.
Factory trained and certified technical staff assist with field service, troubleshooting, and systems support.
A multi-million dollar Woodridge inventory helps agencies access compatible equipment and replacement options faster.
Experienced support for agencies, contractors, and consultants.
Traffic Control Corporation was founded in 1946 by Joseph Lizzadro, Sr. and Edward R. Hansen at 134 North LaSalle Street in Chicago, Illinois. From its original role as an exclusive distributor for Automatic Signal Company in Illinois, Indiana, and Wisconsin, TCC has grown into a leading Midwest distributor of traffic signal equipment and ITS solutions. Now headquartered in Woodridge, Illinois, with regional offices in Indiana, Missouri, Minnesota, and Iowa, the company supports agencies and contractors across eleven states. TCC’s vision is grounded in practical service: help public agencies apply advancing transportation technology, maintain dependable infrastructure, and respond to the growing challenges of modern traffic management.
A vehicle detection system identifies when vehicles are present, approaching, queued, or moving through an intersection or roadway segment. In traffic signal applications, detection sends calls to the controller so phases can serve real demand. Systems may use loops, video, radar, or wireless sensors, depending on intersection geometry, cabinet configuration, agency standards, and maintenance goals.
Connect with our technical support team for practical next steps.
TCC supports transportation agencies and contractors across the Midwest with field service and technical expertise.
11 States
Service Area
Mon–Fri
Business Hours
4.8 Google
Customer Rating
Ask our team about support in your region.
Serving transportation agencies since 1946.
Technical staff trained for field service.
Recognized by customers on Google.
Tell us about your intersection, corridor, equipment, or detection issue, and our team will help identify the right next step.
For immediate assistance, feel free to give us a direct call at +1 630-543-1300. You can also send us a quick email at issnews@imagesensing.com.
For immediate assistance, feel free to give us a direct call at +1 630-543-1300. You can also send us a quick email at issnews@imagesensing.com.