Non-Intrusive Detectors record vehicle count and classification data without interruption to traffic flow. Installation of non-intrusive detection systems usually involves no requirement for road closure or traffic management and deployment includes utilizing existing road side infrastructure.

TDC product range includes 3 types of non-intrusive detectors including the HI-TRAC BLUE Bluetooth MAC Address Reader, Viking Radar Counter Classifiers and the HI-TRAC iLOOP Interface Loop Detector.

HI-TRAC BLUE
The HI-TRAC BLUE Traffic Impact Analysis System uses Bluetooth signals to derive Traffic Journey Time information as well as Traffic Movements (Origin and Destination).

The HI-TRAC BLUE reads the unique MAC address of Bluetooth devices that are passing the system. Bluetooth devices include mobile phones, PDA’s, hand-free kits, GPS onboard units, laptops, etc.

The MAC address data is transmitted by the HI-TRAC Blue device via GPRS or cabled Ethernet TCP/IP connection to a central server and database. MAC addresses from other HI-TRAC BLUE systems are matched to determine traffic journey times and movements.

The HI-TRAC BLUE provides “Invisible detection” for the owner of the detected Bluetooth device. The detection process is unnoticeable for the owner.

The device information collected by the HI-TRAC BLUE cannot be associated with the device’s owner, whose privacy and user information is guaranteed. The received Bluetooth MAC Addresses are truncated and then fully encrypted before transmission.

Viking Radar Counter Classifier
The Viking radar counter classifier can be installed on existing street furniture at the side of the road to record vehicular traffic flows by volume, classification and speed.

The radar system uses the proven Doppler effect to accurately measure the vehicle speed, length and gap.

The unit is supplied with a unique adjustable pole mount bracket and is powered by two zinc-air batteries giving up to 6 months uninterrupted operation.

HI-TRAC iLoop Interface Loop Detector
The HI-TRAC® iLOOP is a small, low powered, low cost electronic system capable of monitoring up to 4 traffic lanes.

The iLOOP interfaces to existing inroad traffic signal loops and listens by means of inductive coupling to the oscillator signal provided by the traffic signal controller to determine vehicle count, classification, speed, gap and headway.

The iLOOP does not interfere with the traffic signal controller operation and has no physical connection to the inroad loops or the controller.