At the test site three different technologies were installed :
RoadPod® VP: Vehicle Piezoelectric Axle sensor-based Counter This was a set of dual 2-metre-length Piezo axle sensors, spaced 1 metre apart and embedded 25mm into the pavement.
RoadPod® VL: Vehicle Inductive Loop sensor-based Counter This was a set of dual 4 turns of 2 x 2 m inductive loops, spaced 3 m apart, embedded 50mm into the pavement
RoadPod® VM: Vehicle Magnetometer sensor-based Counter This was an array of 4 hot glue surface mounted magnetometer raised pavement road stud each of dimensions 110mm x 110mm x 20mm (height)
A. Classification accuracy 98.9%
98.9% of vehicles were correctly classified according to the AustRoads-4 scheme, relative to the class reported by the loop system.
B. Volume Accuracy 100%
Error = 0.00%
Loop Volume: 6186 vehicles
VM Volume: 6186 vehicles
C. Speed Accuracy 99.98%
6186 Vehicles surveyed
Average Error: -0.1% (0.0kph) Median Error: -0.2% (-0.1kph) Error Std. Dev.: 3.4% (1.4kph)
