350lm not routing correctly

Discussion in 'Mapping & Navigation' started by shay, Jun 13, 2013.

  1. shay

    shay reading is hard

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    I bought a Garmin 350lm a month ago and used it on a weekend away to Cork / Kerry. I had it set to fastest route but the bloody thing kept sending me down boreens, with grass growing in the middle of the road.

    When I returned, I checked the roads it was sending me on and it looks like the gps is choosing shortest route, instead of fastest.

    Fastest should always choose good roads, with a minimum of full tarmac! I have emailed Garmin and included screen grabs of where I should have been routed, using Google maps and basecamp, and where I was actually routed. No reply yet and this is frustrating.

    I don't spend hours putting in routes, i save places I want to see as waypoints and navigate between them. I trust the gps to keep me on fastest route, if that is what I select.

    I have used a 2610 since 2005 so am familiar with a gps and the 2610 was faultless in this basic routing decision making.

    Has anyone else encountered this problem, screen shots below of simple example:

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    [​IMG]
    #1
  2. Emoto

    Emoto Sure, why not?

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    Sounds like you had your Transportation Mode set to motorcycling. Set it to automobile and that should do the trick for you. Touch the vehicle icon in the upper left of the screen that has Where To and View Map and select automobile.
    #2
  3. shay

    shay reading is hard

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    thanks, I tried that and same result. I reset the gps according to instructions from garmin before doing this and same results.. fastest route keeps sending me down local roads instead of the faster national roads. Looks like garmin's software for the 350lm is bugged.

    I tried the same route on a 2610 and a garmin car gps and both select the correct national roads. I've phoned and emailed Garmin but haven't had the warmest of receptions, tbh.
    #3
  4. Emoto

    Emoto Sure, why not?

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    How are your Avoidances set, under Settings > Navigation? Could you be set up to avoid highways?
    #4
  5. shay

    shay reading is hard

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    no, only avoidance is unpaved roads. I unticked all avoidances and it doesn't make a difference. I've used a 2610 since 2005 and bought the 350 for newer maps and bluetooth connectivity.

    Garmin's software, for this gps, isn't grading the roads correctly. Fastest route works correctly on the 2610 and the nuvi car gps.

    Thanks for the troubleshooting, it's more than I got from garmin's helpline.
    #5
  6. 9Dave

    9Dave Bazinga!

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    The GPS will only be as smart as the underlying map data.

    If the road types and assumed travel speeds calculate that it is the fastest route, that is what it will choose. It will not necessarily choose a paved road where you can travel highway speeds.
    #6
  7. Emoto

    Emoto Sure, why not?

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    I used to fake out my 2720 by setting my own speeds for different road types. I wonder if that could be done for the 350?

    Also, there was a CNNA map update released yesterday. Shay, you might want to see if there is also an update for your area and run that if there is. Could make a difference.

    ETA: There is now a v 2.70 350 update that fixes a couple of things. Your routing issue is not mentioned, but who knows what else was in there.
    #7
  8. roadspirit

    roadspirit Been here awhile

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    It's not just the 350LM. I get the same results with my Montana, all the time, regardless of avoidances setup, on automotive activity.
    #8
  9. shay

    shay reading is hard

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    it doesn't make sense? A cheap nuvi 1370 will route me down major roads on "fastest route" the (free) google maps app on my iPhone will route me correctly, but a €300+ gps will send me down tiny grass covered lanes.

    I'm at war with Garmin support over this, I refuse to accept that this behaviour is intentional. I can't believe that a company which designs gps for a living would have such poor routing options.

    If it is intentional, I'm returning the 350 and will use the 2610.
    #9
  10. Emoto

    Emoto Sure, why not?

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    I don't understand because mine does not exhibit this behavior.
    #10
  11. shay

    shay reading is hard

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    I think Garmin's algorithms for Irish roads are completely incorrect. They see a lane, with grass growing in the middle of it, as the same as a major national route, with this model gps.

    I presume they haven't sold too many in Ireland yet so the problem isn't widely reported. Two other gps, basecamp, google maps & google maps on iPhone, can all differentiate between national, minor and local roads and route appropriately.

    I will keep emailing until I get an answer from an engineer at Garmin who says it's broken or it's working and tough shit, deal with it.
    #11
  12. 9Dave

    9Dave Bazinga!

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    Time = Distance / Speed

    So, one of the variables is screwed up. Does the 350LM allow you to set your own speeds for road types? If so, see what they are set at.

    And if it's a data problem, that the road types are not precise, then maybe that is something they need to fix with whoever is supplying the map data.
    #12
  13. DRTBYK

    DRTBYK All Things GPS

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    What version of City Navigator EU are you using? In BaseCamp, with my older v2012.40, it took two via points to get a route to take Corballis Lower road no matter what the Routing Avoidances were set to.

    So, either your map is bad or the zumo 350LM does have a serious routing problem in that area [with how the zumo 350LM is interpreting the map data].
    #13
  14. shay

    shay reading is hard

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    My email was finally escalated and I'm now dealing with someone who will test the routes as I have described. If Garmin's findings are the same as mine, I will be changing the gps to a 660 or similar model but I honestly think their algorithms for Irish roads are incorrect.

    My cheapo nuvi 1370 routes me correctly when fastest route is selected, surely a model that cost 3x as much should do the same?
    #14
  15. Emoto

    Emoto Sure, why not?

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    Yes, of course it should. :deal

    Garmin has a history of releasing products with flaws and then fixing those errors over time (or not). The 350 is their newest moto GPS, so it is unfortunate, but not shocking, that it has its share of issues.

    If you have finally gotten to someone with some authority, it sounds like things are going well.
    #15
  16. shay

    shay reading is hard

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    I don't mind if there are bugs in a newly released model, what infuriated me was the reception I got from the phone help desk. I was told "the gps got you to your destination, who cares what roads it took to get there".... I seriously thought of hopping on a plane to talk to that person face to face :pain

    I'm reasonably happy now that I'm emailing someone who has a 350lm and who can test to replicate these issues.
    #16
  17. shay

    shay reading is hard

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    I updated my 350 to the latest maps and, fingers crossed, the gps is now routing correctly.
    #17
  18. Emoto

    Emoto Sure, why not?

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    Glad to hear it! :thumb
    #18