The driving around work is only part of the process.
The work is primarily done by teams of workers putting together the road network in a GIS based on topographic maps and air photos. The addresses are added to the data from parcel maps, census data, postal data, etc...
The driving around work is to field check the data and keep it up to date. Building the data by driving each road wouldn't be cost effective.
Slashdot Mirror
The driving around work is only part of the process.
The work is primarily done by teams of workers putting together the road network in a GIS based on topographic maps and air photos. The addresses are added to the data from parcel maps, census data, postal data, etc...
The driving around work is to field check the data and keep it up to date. Building the data by driving each road wouldn't be cost effective.