[gps-talkusers] Re: vehicular route differences

  • From: Charles LaPierre <charles@xxxxxxxxxxxxxxxx>
  • To: gps-talkusers@xxxxxxxxxxxxx
  • Date: Sun, 26 Aug 2007 07:39:26 -0700

Hello guys,
Nice guess Alex, that is what Map Quest uses actually, we do not yet store the average speeds of each segment of the road with your route so all we have is the total route distance. When you are not moving we use for vehicle routes 25 MPH as your "speed", for Pedestrian routes when you are not moving we use 2 MPH.
So once your are up to speed while driving try the ETA again and you should get some more realistic ETA's.
In the future we are looking to get more realistic ETA's while not moving, and even better ones while driving. 

Thanks
Charles.


At 07:22 AM 8/26/2007, you wrote:
Just a guess, but version 4 uses average speeds traveled on roads while Map Quest probably uses exact speed limits. This may account for it. 

Have a great day,
Alex


----- Original Message -----
From: John Gassman <johngassman@xxxxxxxxxxxxxx
To: gps-talkusers@xxxxxxxxxxxxx
Date sent: Sun, 26 Aug 2007 06:52:58 -0700
Subject: [gps-talkusers] vehicular rout differences



Hello,
I along with my twin brother and  friends are going to Phoenix at

the

end of September.
 Our chorus and quartet are competing in the district bargershop

convention.

Just for fun, we thought we'd do a little Gps comparison. I have
Sendero's Gps, my brother Larry has Pac mate's street talk and my
friend has the commercial Gps for his car.
When I calculated the route from where I live in anaheim to

Phoenix,

it claimed 355.54 miles and 14 hours to get there.
Now I could see this as accurate if I or larry were driving!
I also checked Map quest and was told 358 miles and 5 hours and

17

minutes to get there.
I'm sure my gps will recalculate once we get on the road but I'm
wondering why such a major difference in estimated time?
John




                John Gassman
mailto:johngassman@xxxxxxxxxxxxxx
Recognition Of The Problem is 51% Of The Solution






Charles M. La Pierre CTO
Sendero Group, LLC

Lat. 37 15' 25" N  Lon: 121 53' 04" W

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