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With most navigation systems, you can choose to avoid certain types of roads. Freeways, toll roads, ferries and U-turns are some examples. On some models, you can also choose faster routes, unpaved roads, or even off-road trails. We were originally excited by the off-road choice, but quickly figured out that this converts the unit to a line-of-sight nav system-very helpful for hiking, but not what we were hoping for.