Unfortunately it is not very descriptive, nor the term most GPS units use. The question that comes to mind when I see the phrase is &quot;match a map with <i>what</i>?&quot; Even the article you linked to begins with a pretty opaque sentence:<p><i>Map matching is the problem of how to match recorded geographic coordinates to a logical model of the real world, typically using some form of Geographic Information System.</i><p>That sounds like something far more general than &quot;snap to road&quot;, which is what this feature is doing; nothing more or less.