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From: Charles on 28 Feb 2010 18:50

GPS navigation gadgets cannot now, and perhaps never will, replace human
judgment!

I, thankfully, never took out an overpass, but have often been mislead by
these evil little gadgets.

I only use mine when I am desperate.

The first problem is the data base. As routes change, it is difficult to
keep them up-to-date. The second problem is the calculation algorithms for
routing.

Route mapping on the Internet is also flawed. Ain't no silicon computer
chips, or their narrowly limited algorithms, that can trump common sense!


From: Otto Yamamoto on 28 Feb 2010 22:33
On Sun, 28 Feb 2010 18:50:12 -0500, Charles wrote:

> Route mapping on the Internet is also flawed.

That's because the information is often flawed. Here's an example:
Junction 7 on the IH 84 in Newburgh, NY was rebuilt to provide a free
flowing link between that freeway and the New York State Thruway. Google
is the only mapping service that even comes close to showing the current
junction configuration, and they have it all wrong. They show *most* of
the new junction, with the exception of the Thruway to west IH 84
flyover. They also show the old configuration of the junction circa 2003:
with the 3 loop slips that were removed when the junction was rebuilt, as
well as the slip roads that were removed from the long 'local traffic'
E-ZPass only slip that links to NY 17K.



--
Otto Yamamoto
From: Stephen H. Fischer on 1 Mar 2010 06:07
Hi,

With Delorme Topo8 you can fix things like what you stated and the routing
engine will use them. Even create new roads. Also other Delorme products.

They also have a extensive program going on where satellite images are used
to correct their data.

They also accept user inputs for errors, I supplied one way out in the woods
where a road was not continuous in their data. "Wild Mad Road" near Ruth,
CA.

So you can fix errors for your own use immediately, they are correcting
their data much faster than the other map makers. Others are all relaying on
bad data that takes years to correct.

SHF

"Otto Yamamoto" <otto(a)yamamoto.cc> wrote in message
news:4b8b3591$0$5018$607ed4bc(a)cv.net...
> On Sun, 28 Feb 2010 18:50:12 -0500, Charles wrote:
>
>> Route mapping on the Internet is also flawed.
>
> That's because the information is often flawed. Here's an example:
> Junction 7 on the IH 84 in Newburgh, NY was rebuilt to provide a free
> flowing link between that freeway and the New York State Thruway. Google
> is the only mapping service that even comes close to showing the current
> junction configuration, and they have it all wrong. They show *most* of
> the new junction, with the exception of the Thruway to west IH 84
> flyover. They also show the old configuration of the junction circa 2003:
> with the 3 loop slips that were removed when the junction was rebuilt, as
> well as the slip roads that were removed from the long 'local traffic'
> E-ZPass only slip that links to NY 17K.
>
>
>
> --
> Otto Yamamoto

From: Otto Yamamoto on 1 Mar 2010 23:02
On Mon, 01 Mar 2010 03:07:21 -0800, Stephen H. Fischer wrote:

> Hi,
>
> With Delorme Topo8 you can fix things like what you stated and the
> routing engine will use them. Even create new roads. Also other Delorme
> products.
>
> They also have a extensive program going on where satellite images are
> used to correct their data.
>
> They also accept user inputs for errors, I supplied one way out in the
> woods where a road was not continuous in their data. "Wild Mad Road"
> near Ruth, CA.
>
> So you can fix errors for your own use immediately, they are correcting
> their data much faster than the other map makers. Others are all
> relaying on bad data that takes years to correct.
>
> SHF

Well, that's spiffy, but as a non-windows user, I'm sod out of luck; not
that I'd particularly be interested in toting a laptop/satnav combo
about, anyway.


--
Otto Yamamoto
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