IOGear GBGPS201 - Manual (Page 93)

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Part II - Tools Menu
A. Method
Quickest – Gives you directions that will get you to your destination faster
(example taking the freeway for long trips and avoiding local congested streets)
Shortest – Gives you directions based on the shortest route based on physical
distance (may not be the quickest way)
Major – Gives you directions based on major streets (if you don’t want to get lost
on unknown streets)
Local – Gives you directions for local streets only (avoids freeways)