Routing onto Unpaved Roads when set to avoid

This isn't specific enough. You need to make it easy for people to find it

Fair enough, now that I know a bit more about OSM, I can send links.

https://www.openstreetmap.org/edit#map=17/51.43680/-0.28987

The part I was being routed onto was the upper section of the Tamsin Trail between Richmond Gate and Ham Gate road which in OSM has a surface correctly set to fine gravel.

I'd like to reiterate though

• The original screenshot above clearly shows my Garmin knew it was an unpaved road
  
• My Garmin was set to avoid unpaved roads, why would it want me to come off Queens road onto the trail?
  
• Queens road s ridden by thousands of cyclists a day, the Tamsin Trail more like hundreds, so why didn't popularity routing help?
  

1. Not quite, your Garmin knew it was named that, it's the attributes of that track that are important, and as posted it was marked as a cyclepath.
2. It did so because it didn't know it was unpaved.
3. No idea, maybe those that do don't ride with GPS.

3. No idea, maybe those that do don't ride with GPS.

I've ridden it with GPS 785 times myself, and the 99,504 cyclists who have logged 1,477,586 rides on this road would like to disagree with you :-)


https://www.strava.com/segments/3479989

I did say maybe ;)

Yeah, it's weird, the Tamsin Trail upper section (nearest Richmond Gate) only has about 20,000 rides on it's segment. I did notice that the upper section that I was directed to a few times on my way through the park is marked as fine gravel, rather than unpaved and I wonder if that makes a difference. It would be useful to know how the Edge prioritises roads for routing and whether it chooses a cyclepath as a priority over a tarmac road. Has Garmin ever published that anywhere?

It took me a while to find it but I got there. (refer to https://www.openstreetmap.org/edit?e...42953/-0.28746)

Note that you could have used any map website. That is, using Google Maps would have been sufficient.

The original screenshot above clearly shows my Garmin knew it was an unpaved road.

My Garmin was set to avoid unpaved roads, why would it want me to come off Queens road onto the trail?

Why wasn't "Tamsin Trail" being shown? I believe that, if a way is unnamed (and unpaved), it will use "unpaved" in the name. But it should show the name if the way has one.

I did notice that the upper section that I was directed to a few times on my way through the park is marked as fine gravel, rather than unpaved and I wonder if that makes a difference.

It might. Garmin is (probably) using mkgmap to convert OSM data to the Garmin map. If "fine gravel" isn't included as "unpaved", the conversion might treat it as paved. That is, the routing might have worked better for you if it was tagged as "unpaved".

The Garmins render (draw) unpaved roads differently (so, it should be apparent whether the Garmin knows that it is paved or unpaved).

Note that sett ("cobble") roads are "paved" but many (if not most) road cyclists would prefer not to ride on them.

It would be useful to know how the Edge prioritises roads for routing and whether it chooses a cyclepath as a priority over a tarmac road. Has Garmin ever published that anywhere?

The newer (some?) of the Garmins have road-cyclist and cyclotourist modes. From what I understand, the cyclotourist prefers cycleways.

No, Garmin hasn't (afaik) published details about routing priorities.

People asking for help should do that work.

The surface is indicated as "unpaved" (maybe, someone updated it recently?)

I agree. But if the person asking doesn't know what to look for then some help can be justified.

I posted trying to shorten this thread, so everybody could locate the issue quickly, hopefully reduced the OP's frustration directed at the wrong place a bit and perhaps educated a few more people.

I'm seeing my 1030 increasingly trying to route me onto unsuitable roads when it's in Road Bike mode and is set to avoid unpaved roads. It does this whether I set it to popularity routing or not. The screenshot is from the road through Richmond Park in Surrey, the road is one of the most popular cycling routes in the world and is part of the route ridden by 20,000+ cyclists every year in the RideLondon Surrey 100. I don;t understand why my Garmin is trying to take me off the tarmac and onto the unpaved road.

I'm on Firmware 5 and 2018 maps.

Is anyone else seeing this?

I think what you are seeing here is what I call the s "shortcut problem".

Here's an example from a 800. In this example, the Garmin does a shortcut rather than use the road the track obviously follows.

https://forums.garmin.com/forum/into-sports/cycling/edge-1000-aa/66782-edge-1000-and-tcx-files/page2?95388-Edge-1000-and-TCX-files=

The following explains what I think is happening:

https://forums.garmin.com/forum/into-sports/cycling/edge-800-aa/80727-the-planned-course-is-not-respected?173089-The-planned-course-is-not-respected=

If this is what happened in your case, there isn't anything you can do about it.

The units (the older ones, at least) don't (always) deal very well with roads/ways that are close together.

Yes, but the point is the problem is in the OSM information. Finding it here means you can see the labelling.

The problem isn't not being shown the OSM data. It's knowing the specific geographic location (being told specifically what to look at).

(I see that you and others have made recent changes.)