What does vehicles/day mean?
Roadway traffic counts are not the same as people who saw your ad.
Roadway volume, not ad views
Numbers labeled vehicles/day (sometimes called AADT) are government roadway traffic counts. They help you judge how busy the road is. They are not a verified count of people who looked at the billboard, and they are not impressions.
QR scans are separate
If the page shows QR scan counts, that is how many times the board’s QR tracker was used. That is different from roadway traffic.