GPX Versions 1.1 vs 1.2 for Garmin Visually Explained

[John S Parry]

@Marinus-van-Deudekom said:

This whole topic is about getting routes into Garmin devices. Garmin uses Here as road map. Its a known and multiple proved fact that routes created with OSM or TomTom cause problems on those Garmin devices.
Im certainly not stating that the Here map is perfect. Far from that BUT it's the map Garmin uses.
If you want to use OSM be my guest.
By the way my Garmin devices are all sold
Im a MRA RouteXpert so yes I'm promoting MRA. Is it perfect no but pretty damn near close and as far as I'm concerned the number 1 app to navigate with.

If "it's a known and multiple proved fact that routes created with OSM or TomTom cause problems on those Garmin devices", where is the documentation? Proven facts are usually outlined somewhere for public consumption. This is the second time you've made this assertion, but again provide no context to what "causes problems" means. We all want to learn, but simply throwing out assertions that fly in the face of what others have actually experienced is not helpful.

But I'll take a stab at what you're trying to communicate. If in Routeplanner you create a route using OSM or TomTom, and in that route you minimize the use of shaping points and instead allow OSM/TomTom to make route calculation decisions for you, problems may in fact occur on a Garmin. You're then allowing Garmin, which has different route calculation algorithms, to possibly choose different paths between Via Points. I'd argue that the problem is more with the route creator than with OSM/TomTom. If you're actually talking about something else, please bring some substance that would be helpful.

[John S Parry]

@steve-jarrell I want to take this opportunity to again thank you for what's essentially been a tutorial on the GPX 1.2 format. I feel like a kid at Christmas. I'll never go back to 1.1 format routes again.

With all the dismissive talk about using OSM as the base map, I created a quick route riding the bad HERE cartography road section I outlined earlier. The route I created was with OSM and saved in the 1.2 format.

I imported the route manually into my XT3 without issue. The link to the route is below:

https://www.myrouteapp.com/route/open/14129162

I proceed to ride the XT3 route for educational purposes. It ran without ever triggering the off-route recalculation dialog box, which it did running under 1.1 HERE. The XT3 clearly showed me riding the track of the real path alongside the HERE mapped road that was in the wrong location. It was fun to watch and spoke to the sophistication of the 1.2 format.

Thanks again!