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Strava segments across tunnels

DavidKroter
over 6 years ago
Really, is it so difficult in the 21st century to implement some way so that when we go in a strava segment and cross a tunnel, the strava segment does not collapse ?. The summits of many sites are full of tunnels. Nobody in Garmin thought it ?. Nobody in Garmin is on a bike?
  • Former Member
    0 Former Member over 4 years ago

    I have exactly de same problem, it is really frustrant when you lost the segment in a tunnel. Garmin should fix this problem

  • 0 over 4 years ago

    The issue is that the "live" segment depends on GPS to estimate where you are in relation to your chosen pacer (your PR, your fastest recent time, KOM/QOM, etc.). Depending on how inaccurate the position fix becomes while in the tunnel, or if it is lost entirely, the segment stops timing on the Garmin...this can also happen in heavily wooded area, or within the "concrete canyons" of segments in urban areas. The signals from the US owned GPS constellation, EU owned Galileo, and Russian GLONASS are very low powered and are subject to physical interference at ground level from things like buildings, hillsides, trees, human bodies...this is not a Garmin issue.

    They could, as they do in automotive applications, write the software to continue showing progress in a segment (under the assumption that the user is riding the segment) based on last calculated speed before the signal degraded, or even use your wheel sensor to determine progress. This probably wouldn't be difficult, but it would require an investment in the software side that they may not consider as important as other things. It would certainly be welcome, nonetheless.

  • Former Member
    0 Former Member over 4 years ago in reply to der_bierpuncheur

    It's correct, that was my proposal the software should continue showing progress in a segment (under the assumption that the user is riding the segment) based on last calculated speed before the signal, and not remove the aplication after 4-5 seconds without signal, for me that is a bug of the sotware because in any part of the world you can lose the signal, but you need continue with the segment and it is really frustrating lose the segment.

    Let me know if garmin fix that problem in the future.

    Thank you

  • 0 over 4 years ago

    Just put a speed sensor you your bike and give that a shot. Normally with a speed sensor speed is computed from that sensor rather than GPS and that may keep the segment going, depending how they coded it. I use a speed sensor on my mountain bike because in that application the GPS based speed is way off since GPS signal is poor. Anyway a cheap thing to try and a solution that may work today. Garmin will not address it otherwise, don't count on it.

  • Former Member
    0 Former Member over 4 years ago in reply to Martin868

    I have speed sensor, the problem is not related to that, it is a bug related with lose de signal of GPS, and then the system remove segment. 

  • 0 over 4 years ago in reply to Former Member

    It's not a bug. As the software currently works, when the GPS signal is lost, the device doesn't know where it is and thus determines that it is "off course." You can see this behavior when following a course, and a Strava Live Segment.

    When riding in a segment, even if you are not thinking so, the device is following a course.  The software would have to be rewritten such that when the GPS signal is lost, while following a course, or segment, it should assume you have continued to follow the course, or segment...paired with a speed sensor this assumption that you are following the track would be enhanced by a more accurate representation of where you are in the track, until it reconnects to the satellites and resolves your position to a a minimum accuracy. This would be welcome on many levels, not just for segments, but also following courses.

  • 0 over 4 years ago in reply to der_bierpuncheur

    I do wish there was a better option to continue Strava Live Segments through tunnels. Just yesterday, I lost a segment I was on while riding through a tunnel. The course as you mention also stops, but picks up on the other side, but not the segment.

  • 0 over 4 years ago

    Do you use a speed sensor on your bike? Maybe this will help you in tunels...

  • Former Member
    0 Former Member over 4 years ago in reply to ZIDANRO

    Yes i use it, this is not the problem, is a software problem.

    Thanks