different routes from same start to same finish

Discussion in 'Maps and Routing' started by 21rouge, Aug 12, 2008.

  1. 21rouge

    21rouge

    Joined:
    Jul 8, 2008
    Messages:
    177
    Likes Received:
    0
    Location:
    Ontario
    TomTom Model(s):
    GO730
    It is dorky :eek: but enlightening to use a TT in one's town i.e. very familiar routes.

    I have a 730 and on two different days (both weekdays at very close to the same time of day) TT gave me two very different routes from the tennis club to home. :confused: .
     
    21rouge, Aug 12, 2008
    #1
    1. Advertisements

  2. 21rouge

    Michael Quinlan

    Joined:
    Apr 1, 2008
    Messages:
    417
    Likes Received:
    13
    Location:
    Central NJ
    TomTom Model(s):
    Go 920
    There are some "normal" circumstances that would cause this. Aside from automatic re-routing to minimize traffic delays, the most likely is your previous direction of travel. You may have noticed that the beginning of your route(s) are sometimes obviously inefficient. This is because TomTom tries to keep you traveling in the same direction that your were traveling when you arrived at your current starting point.

    For example, my house is about 600 feet from a major intersection. When TomTom is guiding me home, it takes me from that intersection, along my street, right to my house. When I then use TomTom to guide me somewhere FROM my house, the route starts out by continuing AWAY from that intersection, even if the calculated route takes me through that very same intersection less than one mile into the calculated route. However, if I didn't previously use TomTom to guide me home, it starts out with an "unknown" orientation, and calculates a route that takes me directly to that intersection.

    If the differences you're seeing are at the beginning of the route, this may be what you're experiencing.
     
    Michael Quinlan, Aug 13, 2008
    #2
    1 person likes this.
    1. Advertisements

  3. 21rouge

    21rouge

    Joined:
    Jul 8, 2008
    Messages:
    177
    Likes Received:
    0
    Location:
    Ontario
    TomTom Model(s):
    GO730
    Thanks for the theory. Given that this does happen should one do a recalculate to maybe get the best route i.e. so it isnt "influenced" by its most recent trip?
     
    21rouge, Aug 13, 2008
    #3
  4. 21rouge

    Arno Moderator

    Joined:
    Jun 3, 2008
    Messages:
    3,375
    Likes Received:
    78
    Location:
    Toronto - Pickering, ON
    TomTom Model(s):
    930; GO 620; Start 63
    Is it possible that you may have changed some settings like 'fastest' vs. 'shortest' route?
     
    Arno, Aug 14, 2008
    #4
  5. 21rouge

    Michael Quinlan

    Joined:
    Apr 1, 2008
    Messages:
    417
    Likes Received:
    13
    Location:
    Central NJ
    TomTom Model(s):
    Go 920
    I haven't come across a way to force it to ignore my last known direction of travel, but I haven't looked for one either. The only place it's really noticeable is at home, and then I just ignore it.
     
    Michael Quinlan, Aug 14, 2008
    #5
  6. 21rouge

    21rouge

    Joined:
    Jul 8, 2008
    Messages:
    177
    Likes Received:
    0
    Location:
    Ontario
    TomTom Model(s):
    GO730
    I know this would be easy to do but I am confident that I chose 'fastest' each time with IQ enabled.
     
    21rouge, Aug 14, 2008
    #6
  7. 21rouge

    Arno Moderator

    Joined:
    Jun 3, 2008
    Messages:
    3,375
    Likes Received:
    78
    Location:
    Toronto - Pickering, ON
    TomTom Model(s):
    930; GO 620; Start 63
    Due to a healthy dose of paranoia I have set my "Home" just before an on ramp to the freeway. My house is about a mile from there with two easy turns.
    Any time I switch on the TomTom it points in the right direction on my street. I presume it points to its "Home" position.
     
    Arno, Aug 14, 2008
    #7
  8. 21rouge

    Arno Moderator

    Joined:
    Jun 3, 2008
    Messages:
    3,375
    Likes Received:
    78
    Location:
    Toronto - Pickering, ON
    TomTom Model(s):
    930; GO 620; Start 63
    Last week I posted the problems I made for myself by not setting the option [Planing preferences] ( o ) Ask me every time I plan .
     
    Last edited: Aug 14, 2008
    Arno, Aug 14, 2008
    #8
  9. 21rouge

    dhn Moderator

    Joined:
    Oct 1, 2007
    Messages:
    22,976
    Likes Received:
    441
    Location:
    Toronto Canada
    TomTom Model(s):
    1535 LIVE; Via 1605; Go 50; Go 520
    Does the name 'Simonston' ring a bell? How's your paranoia now??:D
     
    dhn, Aug 14, 2008
    #9
  10. 21rouge

    Viventis

    Joined:
    Aug 7, 2008
    Messages:
    26
    Likes Received:
    0
    Does Tomtom learn?

    To get back home there are two choices at about the two mile mark. For the first handful of times, my 720 chose one way, which I always ignored. Now from the same approach direction it always chooses the way I normally go!
     
    Viventis, Aug 14, 2008
    #10
  11. 21rouge

    Arno Moderator

    Joined:
    Jun 3, 2008
    Messages:
    3,375
    Likes Received:
    78
    Location:
    Toronto - Pickering, ON
    TomTom Model(s):
    930; GO 620; Start 63
    Nope. Neither did a brief Google search.
     
    Arno, Aug 14, 2008
    #11
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.