Map Quality / Accuracy

 

I just purchased a nuvi 1450T, and I find it very refreshing compared to my old TomTom 930T. One of the things that seriously frustrated me with TomTom was the lack of accuracy in the maps. I am not referring to a brand new overpass, but in one case a piece of highway that has been in place for over 10 years and is 15 miles long, but TomTom's maps were unaware of it.

And before you ask, yes, I am having to put some recommended changes into Garmin to updates it maps for things that have been in place for about 2 years.

Since many people, including paramedics and the like, heavily depend on GPS's to find where they need to go to aid people, how long do you feel that a permanent road change should be in place before GPS users should expect those changes to be reflected in the GPS maps.

A couple of clarifications

"Since many people, including paramedics and the like, heavily depend on GPS's to find where they need to go to aid people"

Most EMS units I work with don't use a commercial GPS unit. They do have GPS, but they don't use the same maps you and I do. Their maps may begin with the basic map set you and I use, but the databases driving them are light years ahead of what Navteq or Tele-Atlas have in their units is based on the same GIS info used by their city/county engineers and tax collectors. Many cities and counties have every lot geocoded and cross referenced to street addresses. But then again, these databases reside in servers that send coordinates to the mobile data terminal running mapping software rather than the address data being held in the mobile device.

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I wish that were the case here.....

I have heard quiet a few stories about EMS personnel not being able to find roads in our area (small town farming area).

that's local

Boilerman wrote:

I have heard quiet a few stories about EMS personnel not being able to find roads in our area (small town farming area).

That's because the name of the street reported by the caller isn't the same as the official name of the street in the MSAG - Master Street Address Guide. The dispatched systems are now designed to take 'local' names and add them to the official street names as an alias. You find this a lot where the same road changes names as it continues though different parts of the same city or county. Hwy 19 is Hwy 199 in the official records, but it may be called many different names, some in the record, many not.

They do get better as the computer systems get smarter.

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