International Road Dynamics
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International Road Dynamics Inc. is a road traffic management system engineering company headquartered in Saskatoon, Saskatchewan, Canada. Its services include automated toll roads, commercial vehicle inspection systems, traffic data collection products, and traffic management software. IRD provides weigh-in-motion systems that are capable of weighing vehicles while in motion and classifying them by axle spacings and speed. Information recorded includes individual axle weights, group axle weights, and gross vehicle weight. IRD’s weigh-in-motion systems are used at highway inspection stations to sort vehicles, ensuring only overweight vehicles are stopped for inspection. This reduces wait times and improves traffic flow at weigh stations. IRD’s WIM systems are also used by fleet managers to ensure vehicles are leaving terminals within the acceptable weight limits for their classification. IRD is a subsidiary of Quarterhill, an Ottawa-based patent licensing company.