How live transit reaches the map, what the delay figure means, how the planner works and where the data comes from.
From the vehicle to the marker on your screen: which open feeds OVatlas reads, how often positions refresh, and why a trip sometimes disappears.
The number is the punctuality the vehicle reports against its own timetable. How to read it, including when it turns out to be negative.
The planner runs on MOTIS over the same national timetable as the map, with walking, bike-to-stop options and search by street address.
Which open sources OVatlas uses, how fresh each part of the map is, and what the site does and does not keep about you.