On Wed, Jun 2, 2010 at 1:12 AM, mike wilson <[email protected]> wrote:
> This has always intrigued me. Do the roads change that much? When you had to pay for every update individually, I pretty much felt like it was worth buying once a year, not once per quarter (the release interval for the maps). It probably depends on where you live. Near us, a highway is being moved to a new alignment. The existing 2-lane road (one lane each way) is being converted to 2 lanes in the same direction, and 2 new lanes for the opposite direction are being constructed up to a few hundred yards away. So that's one place where to roads change constantly for us. We've also had about 30 miles of new Interstate open up since we bought our unit a year and a half ago. The map updates also fold in corrections they've accumulated (which includes things like the "house number" to "location along road" conversion, which is often inaccurate). You also have things like municipalities converting roads from one-way to two-way or vice-versa, or imposing new no-left-turn rules, or things like that. At least for TomTom, the "points of interest" database is part of the map update, so as businesses come and go, there are changes to reflect that. I would imagine that back during the housing boom, when new developments were being built at a furious clip in a lot of places, you saw a lot more actual road changes. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
