How do you distinguish pedestrians and cyclists with a single sensor? The multi-flow problem
On greenways, hiking trails, and mixed-use public spaces, the question that comes up most often is not “how many people pass by?” but “how many pedestrians, how many cyclists, and possibly how many other types of users?” ”. This distinction — what counting professionals call multi-flow classification — is often decisive in sizing a layout, evaluating a conflict of use, justifying a differentiated request for financing or producing an impact assessment by type of mobility. However, not all sensors know how to make this distinction. Some count without differentiating. Others differentiate poorly or unreliably. And some succeed in doing so natively, with sufficient precision for territorial uses. This article explains how multi-stream classification works, what technologies actually allow it, and what are the limitations to know before choosing a sensor.
Bicycle Trails and Greenways
March 18, 2026