Magellan RoadMate 300 Reference Manual page 27

Maps and Data
Say that you want to drive from Los Angeles to San Francisco. First, you need to know how much space you have
available (which the Magellan RoadMate Manager software will show you). You can draw one region that has both Los
Angeles and San Francisco contained within it, but it may be too large to store in the unit or on an SD Card. Consider
creating two regions: one for Los Angeles and one for San Francisco. So, what you would end up with would be detailed
information for Los Angeles, detailed information for San Francisco, and the space in between is the basemap. Starting
in Los Angeles you would have all of the detailed information to get you on the freeway and start you toward San
Francisco. Once you leave your detailed region of Los Angeles, the basemap takes over and routes you all the way to
your San Francisco region, where the detailed region assumes routing. While in the basemap, you are routed on the
freeways and major highways.
101
5
580
SAN FRANCISCO
5
101
101
5
101
LOS ANGELES
BASEMAP
21