Different dirsctions on a GPS device?

I have a GPS Garmin c550. It give me different directions on a return trip. Went to Cooperstown NY. one way & return trip be 2/3 another way. Why is this? Return trip be 30 miles shorter.


Answers:    The garmin you have have a 'traffic receiver' that can tell if traffic is tied up somewhere. Often times it will route you differently to avoid traffic if it is too congested.

See https://buy.garmin.com/shop/shop.do?pID=...
for more infotmation.
My Garmin gps allows for the inspection of "Shortest Route" or "Fastest Route" and that choice will give diffrent roads.

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