Signal Preemption System

The IRD signal preemption system uses WIM technology to detect runaway trucks on a steep grade which leads into a signalized intersection. If a runaway situation is detected, the signal controller is triggered to provide a green light as the vehicle approaches the intersection.

  • Detects runaway vehicles before they reach intersections
  • Avoid potentially catastrophic accidents
  • Triggers to provide or extend a green light
  • Reduces property damage, injury
  • Saves lives


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