Route changes on me mid-course

I don’t understand why this happens, but it happens almost every time I ride. For example, yesterday, my wife and I went for a ride that I had planned out, saved, and then loaded up for our ride. As we were headed up the mountain, it kept wanting me to take side roads that weren’t what I had mapped out and saved. I had to stop my ride and figure out what it was doing. I ended up shutting it off and using Rever. It’s as if the shaping points have a mind of their own and want to take me down roads that are absolutely unsuitable for my motorcycle, but were not roads I mapped out when I planned the ride. I spent good money for this program, but I keep having to shut it down and use either Rever or Google Maps.

Hi Mike.

Please share an example route, so we can check.
Which navigation device are you using? Kurviger app or something else?

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I’m using Kurviger. I only ended up using Rever or Google Maps after Kurviger added unwanted turns to my route. It’s almost as if it was dynamically changing my route for whatever reason, but I wasn’t deviating from my planned route. I know Google Maps is great for instantly recalculating routes if I deviate for some reason, but this was a static route I planned beforehand and then loaded up prior to my trip. I will try to attach the route file for you. One of the extra turns it directed me to was just after Shaping Point 22 (wanted me to turn left onto Bear Cage Road) and then one other, but I don’t recall that location. If you’d prefer it in .gpx format, let me know and I’ll add that.

Top of the Roan - Leaf Peeping.kurviger (53.1 KB)

I assume that the automatic route recalculation was switched on - this is the only case, where Kurviger would change the route without user action. To trigger the automatic recalculation, the app would need to detect that you are “off-route”. This may be the case if you accidentaly deviate from the route or maybe because the GPS signal was innacurate. Also there is currently a problem with the “on-route” detection on some devices, which could also possibly retrigger route recalculation.

If you have the track recording, the team could try to simulate your ride and reproduce the problem.

Also, please post the debug information from the bottom of the Settings menu.

General remark on your round trip - you should place at least one (or more) Via-Points (blue marker) on it, otherwise your route may “fold” as shaping points (black marker) may be skipped during recalculation.

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Hi Soujrnr,
thanks for bringing this up. I had just loaded the kurviger file you attached but I could not see any extra loop created. Also the shown route settings (fastest as default) do normally not create extra loops. Maybe I did not get it fully. Was this route planned on the device you use for navigation too or on another one? The clue is to check which are the default route options on your navigation device. Please let me know.

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IMHO you have set way too many shaping-points, which are often placed unfavorable.

  • some of them are close to intersection
    Stay away from intersections and nearby roads!
  • some are close to each other
    They might interfere which each other.

General rule of thumb is ~ 10 WP / 100km.
In other words not more than 20 waypoints per 100 miles.

When you click on the yellow sign, Kurviger gives you a warning about the placement of some waypoints.

WP33:
If you want to stop there, it would be better to change shaping point 33 into a via point.

  • The routing system treats via points as mandatory.
  • Via points are announced in navigation.

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I have exported the route as gpx and imported again, so the route could be optimized with Kurviger-Import routines.

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I normally plan the routes on my big computer and then save them to the cloud. When I’m ready to ride a route, I load the route on my phone and then ride it.

I normally don’t use that many shaping points, but what I have also run across in planning trips is that the app keeps wanting to go on roads and routes I don’t want, and so it forces me to add shaping points to ensure I stay on the route I want. I am also aware of the shaping points being too close to intersections. I try to avoid that, as you mentioned.

The roads here in this part of the United States (in Tennessee) are crazy, and it often forces me to add extra shaping points in order to stay on my preferred route. I am going to start this route from scratch and see how few shaping points I can get away with before it starts taking me on roads I don’t want to go on. Thank you for your wisdom on this.

Thank you very much for this! I have updated my file with this one and will try the ride again and see how it goes.

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6?

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4 - including the real via point from the original route

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When I want to be sure, the route is quite strict, I start with only a few points, as these 6. I switch then between planned curviness and all to see where the route can break out. I set as many SP as required, until the route does not break out anymore.

I guess, the truth will be between these 6 and the 25 of mine. My lazy proposal was just the optimized import in Kurviger from gpx.

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Thank you, everyone! I guess I’ll have to play with the curviness settings more as I plan. This particular route is pretty straight forward. I have over 100 routes mapped out in my area that are much more complex due to the roads, but this will help. I very much appreciate your help!

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Curvines and avoidances. If you want to drive on a motorway, you should not activate the motorways in the avoidances. Otherwise you will need a lot of shaping points to force the route along them. Your route without avoiding motorways: https://kurv.gr/SdUBv

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Thank you! Ride safe!

Eine GPX fährt man immer 1:1 als GPX-Track.
Top of the Roan - Leaf Peeping.GPX (478.8 KB)

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If I want to ride most exactly the planned route, I don’t you shaping points, I use via points proper set to wanted roads. And I deactivate the new calculation of the trip. Then I think, it would be o.k., if you planned with the wanted curviness, see what route comes out (on the PC), and if something could be made better, set a via point onto the road you want within the route.

In general, in which case of planning a route one uses shaping points?
Only, if you want to let kurviger recalculate, if one deviates from the route?

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Here, I would use shaping points for shaping the route and via-points to mark your planned stops. (And deactivate the recalculation).

The difference is - the time and distance to the next VP is displayed while navigating, whereas for SP this is not the case.

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If I would have activated the recalculation, then it would be a difference, because when a deviation from the route occurs, kurviger could alter the former route, also not considering the initially set shaping points. Via points are not altered while recalculating, or am I wrong?

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