Non-Intrusive Traffic Detection Evaluation

In collaboration with the Minnesota Department of Transportation, SRF conducted a multi-phase evaluation of non-intrusive traffic detection technologies (NIT) to assess their viability as alternatives to conventional roadway-based systems. The goal was to understand how these technologies could improve safety, minimize disruptions, and deliver high-quality traffic data at lower costs.

SRF evaluated a range of sensor types, including microwave, magnetic, laser, sonic, ultrasonic, infrared, and video image detection. These technologies were tested under various mounting conditions to simulate real-world scenarios and deployment environments.

As part of the effort, SRF also designed and tested a portable non-intrusive traffic (PNIT) detection system. The system was developed to mount easily to existing poles or signposts and included a sidefire sensor capable of monitoring multiple traffic lanes. This self-contained, mobile setup offered an innovative alternative to traditional road tube detection, particularly for use on freeways and arterials.

Through these studies, SRF demonstrated the potential of NIT solutions to enhance traffic monitoring while improving field safety and operational efficiency.

Evaluation of Non-Intrusive Technologies