For me dealing with deliveries where the GPS does not even believe there are roads yet is not a problem since I really only use it to get me to general area. First thing is to make a phone call when out about 30 minutes to an hour to let them know when to expect me and find out how the best wat in area is. Also roads and road design is pretty straight forward and a little common sense will get you to where you need to go.
For me dealing with deliveries where the GPS does not even believe there are roads yet is not a problem since I really only use it to get me to general area. First thing is to make a phone call when out about 30 minutes to an hour to let them know when to expect me and find out how the best wat in area is. Also roads and road design is pretty straight forward and a little common sense will get you to where you need to go.