English: Mounted upon a signpost featuring a MUTCD regulatory R5-3 series sign (i.e. "No Motor Vehicles") along the 'Island Line Trail' in Colchester, Vermont in the summer of 2008, this bicycle & pedestrian counter is capable of collecting bi-directional bicycle & pedestrian traffic (i.e. the direction of travel of each pedestrian, bicycle, et al. is logged). The device's sensor detects infrared radiation emitted by each person who passes by it. The sensor's narrow profile further enables it to count two or more people following closely to one another. The device will function at temperatures between -40 deg. F up to 122 deg.F.

This device cannot distinguish between bicycles or pedestrians.

A common factor reducing the level of observation (i.e. under-counting) of this data is lack of the pyroelectric sensor's ability to detect adjacent-travelling bicyclists or pedestrians (See page 10 in the paper: "Effectiveness of a Commercially Available Automated Pedestrian Counting Device in Urban Environments: Comparison with Manual Counts" ~ 22 Jul 2007).