Tracking doesn't always work perfectly. Inaccurate locations or timeslots can prevent Visibility from confirming a stop visit.
When this happens, tracking continues rather than aborting. The problematic stop is marked as "Visited (untracked)" and tracking proceeds to the next stop. Since Visibility only displays vehicle locations between confirmed stop visits, the snail trail remains hidden.
Review the scenario below to see how you can identify these cases:
