Re: [talk-au] Routing problem near Albany, WA

[Ben Ritter]

The intersection in question is quite new, so I am not surprised that there
are cache issues as you guys have identified. Each routing engine will
ingest new OSM data on its own schedule.

One thing that I noticed with the spurious "at the fork, turn right onto
Albany Hwy" instructions in the original OSMR link
,
is the lack of `_link` roads. I would expect the on- and off-ramps to be
tagged as `highway=trunk_link`. I suspect the routing engines are expecting
the same, and therefore seeing the Menang Dr slip road
 as a legitimate fork in the
highway.

The latest incorrect directions with "turn sharp left" are probably the
result of missing turn restriction relations
. I would expect
some "no_u_turn" restrictions where slip roads join the two-way hwy way.
For example, https://www.openstreetmap.org/way/1077469012. Some routing
engines will infer this from the angle of the ways, but not all of them.

Cheers,
Ben

On Fri, 9 Jun 2023 at 03:39,  wrote:

> Ian
> Looking again at the routing:
>
>  1. Continue onto Menang Drive20m
>  2. Keep right onto Menang Drive130m
>  3. Turn sharp left onto Albany Highway20m
>  4. Turn sharp right onto Menang Drive160m
>  5. Arrive at destination
>
> Its like its working partially off an old cache:
>
> 2. Keep right onto Menang Drive130m
> It thinks it can get on to Menang Dve, it used to be able, now its
> 130m further east
>
> 4. Turn sharp right onto Menang Drive160m
> it used to be able, now its 160m of off road driving
>
> The routing engines work off the ways not the tiles don't they? Can
> the router be working off a cached set of ways?
>
> Tony
>
> > Yes Ian
> > I think you are right. It was showing the cached copy even now with the
> > kink. I just refreshed it. The routing is still wrong
> >
> >   1. Continue onto Menang Drive   20m
> >   2. Keep right onto Menang Drive 130m
> >   3. Turn sharp left onto Albany Highway  20m
> >   4. Turn sharp right onto Menang Drive   160m
> >   5. Arrive at destination
> >
> > Tony
> >
> >> Do you mean where Menang Drv curls around and meets Albany Hwy at a
> >> T-junction?  If so, I took the kink out yesterday (?) - maybe the
> renderer
> >> hasn't caught-up with the change when you looked at it ??
> >>
> >> Ian
> >>
> >>> Hi
> >>> Sorry if this is my misunderstanding but it seems that the same mistake
> >> that is made by the routers is being made by some tile >rendering
> engines
> >> too. The standard tile has a kink at the end of Menang Drive
> (1077469021)
> >> which is not there. The >cycleOSM tile renderer does not do this.
> Likewise
> >> the junction of Menang Drive
> >>> (1077469008) is shifted NW by the Standard tile renderer but not the
> >> CycleOSM tile renderer.
> >>> Tony
> >>
> >>
> >>
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> >
> >
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Re: [talk-au] Routing problem near Albany, WA

[forster]

Ian
Looking again at the routing:

1. Continue onto Menang Drive20m
2. Keep right onto Menang Drive130m
3. Turn sharp left onto Albany Highway20m
4. Turn sharp right onto Menang Drive160m
5. Arrive at destination

Its like its working partially off an old cache:

2. Keep right onto Menang Drive130m
It thinks it can get on to Menang Dve, it used to be able, now its  
130m further east


4. Turn sharp right onto Menang Drive160m
it used to be able, now its 160m of off road driving

The routing engines work off the ways not the tiles don't they? Can  
the router be working off a cached set of ways?


Tony


Yes Ian
I think you are right. It was showing the cached copy even now with the
kink. I just refreshed it. The routing is still wrong

1. Continue onto Menang Drive   20m
2. Keep right onto Menang Drive 130m
3. Turn sharp left onto Albany Highway  20m
4. Turn sharp right onto Menang Drive   160m
5. Arrive at destination

Tony


Do you mean where Menang Drv curls around and meets Albany Hwy at a
T-junction?  If so, I took the kink out yesterday (?) - maybe the renderer
hasn't caught-up with the change when you looked at it ??

Ian


Hi
Sorry if this is my misunderstanding but it seems that the same mistake

that is made by the routers is being made by some tile >rendering engines
too. The standard tile has a kink at the end of Menang Drive (1077469021)
which is not there. The >cycleOSM tile renderer does not do this. Likewise
the junction of Menang Drive

(1077469008) is shifted NW by the Standard tile renderer but not the

CycleOSM tile renderer.

Tony




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Re: [talk-au] Routing problem near Albany, WA

[forster]

Yes Ian
I think you are right. It was showing the cached copy even now with  
the kink. I just refreshed it. The routing is still wrong


1. Continue onto Menang Drive   20m
2. Keep right onto Menang Drive 130m
3. Turn sharp left onto Albany Highway  20m
4. Turn sharp right onto Menang Drive   160m
5. Arrive at destination

Tony


Do you mean where Menang Drv curls around and meets Albany Hwy at a
T-junction?  If so, I took the kink out yesterday (?) - maybe the renderer
hasn't caught-up with the change when you looked at it ??

Ian


Hi
Sorry if this is my misunderstanding but it seems that the same mistake

that is made by the routers is being made by some tile >rendering engines
too. The standard tile has a kink at the end of Menang Drive (1077469021)
which is not there. The >cycleOSM tile renderer does not do this. Likewise
the junction of Menang Drive

(1077469008) is shifted NW by the Standard tile renderer but not the

CycleOSM tile renderer.

Tony




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Re: [talk-au] Routing problem near Albany, WA

[Ian Steer]

Do you mean where Menang Drv curls around and meets Albany Hwy at a
T-junction?  If so, I took the kink out yesterday (?) - maybe the renderer
hasn't caught-up with the change when you looked at it ??

Ian

>Hi
>Sorry if this is my misunderstanding but it seems that the same mistake
that is made by the routers is being made by some tile >rendering engines
too. The standard tile has a kink at the end of Menang Drive (1077469021)
which is not there. The >cycleOSM tile renderer does not do this. Likewise
the junction of Menang Drive
>(1077469008) is shifted NW by the Standard tile renderer but not the
CycleOSM tile renderer.
>Tony



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