
caddesign
Dec 11, 2011, 6:43 AM
Post #29 of 105
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Re: [caddesign] Tips & Tricks for using Garmin & TomTom GPS in Mexico
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Routing Engine Performance http://www.gpsmagazine.com/2007/06/tomtom_one_xl_review.php?page=9 All the bells and whistles aside, what really matters on any GPS is the quality of the maps, and how well the GPS figures out the best way to get from point A to B. The single most common complaint I hear, is "the GPS took me on a crazy route that I would never have chosen and was not the best/shortest way." Arguably the most critical components of any turn-by-turn GPS navigation system are the routing engine and map accuracy. The routing engine is the software on a GPS that decides which route the unit should choose to get from point A to point B. Many people falsely assume that simply having the same maps on two GPS devices will result in the same routing choices. Not so, as there is a great deal of math and decision-making involved when calculating the "best" route. Not surprisingly, this also one of the most difficult and complex aspects for GPS manufacturers to get right, and is the aspect of GPS navigation that is least well understood by consumers. There is a lot more to a routing engine than just the mapping data provider. How a given GPS will determine the "best" route is the result of not only the mapping data, but also how many additional data points, or attributes, are factored into the equation.
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