They seem to be points related to those shown as white road outline on right bottom quarter, also when a car drives across view at 0:24 it is marked by blue dot

They seem to be points related to those shown as white road outline on right bottom quarter, also when a car drives across view at 0:24 it is marked by blue dots too, so it must be radar data for road boundaries and physical obstacles (like building wall at 0:15).