International Road Dynamics, Inc. (IRD)
We make highways talk.
2402 Spring Ridge Drive
Spring Grove, IL 60081
Spring Grove, IL 60081
Additional Information
In business since 1900
Our firm supplies a complete line of traffic data collection and traffic safety products. Our clients include state and federal DOT's, cities and towns, counties, municipalities, and private businesses. We specialize in traffic counters, traffic classifiers, portable WIM, portable weigh pads,
warning light systems, dynamic message signs and auditable alarms are just some of the tools available.