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I tried to get a route and found an error here.

alt text

asked 29 Aug '21, 23:26

andy%20mackey's gravatar image

andy mackey
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accept rate: 4%

OSRM router now working as expected. and Graphopper just now.

(01 Sep '21, 08:38) andy mackey

GraphHopper Does not work East to West 03/09/2021 a hadn't tested the routing in both directions, sorry.

(03 Sep '21, 07:39) andy mackey

That must be a glitch or bug in GraphHopper. There is now really nothing left that could prevent routing. Maybe GraphHopper is wrongly evaluating the no u-turn restriction.

(03 Sep '21, 14:17) TZorn

How can we find and replicate that error some where else on the OSM. And then report it to GraphHopper?

(03 Sep '21, 14:31) andy mackey
1

Graphhopper routes correctly now both ways. Something must have lagged in the data processing.

(06 Sep '21, 09:04) TZorn

I tested GraphHopper was working as expected early on 04/09/21, it was,and their algorithm had needed time to calculate both directions i guess. I shows how smart routing engine programmers need to be. Incidentally I travelled this road later that day as a passenger, The turn restrictions are solid white lines and a hatched virtual island at the node in question, I didn't see any other signage, which it doesn't need of course. On my PC later, running Potlatch, I could just about see the virtual traffic island on Bing.

(06 Sep '21, 10:25) andy mackey
showing 5 of 7 show 2 more comments

Hi andy mackey, there is one point on this road with a lot of turnrestrictions with the effect that you cannot go anywhere (?) It maybe an error :

https://www.openstreetmap.org/changeset/94956680 restriction=no_straight_on

User eteb3 changeset 94956680

Turn restrictions at London Rock quarry turn nr Warmington ; add bldg; add operator at quarry

I'm in The Netherlands and not familiar with the situation The solution is to delete this relation, Imo hth Gys

permanent link

answered 30 Aug '21, 06:48

Gys%20de%20Jongh's gravatar image

Gys de Jongh
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accept rate: 16%

I'm also suspicious of the same tagging, but wasn't sure late last night, thanks Gys de Jongh

(30 Aug '21, 08:52) andy mackey

HELP please we are not sure :-)

(30 Aug '21, 17:27) andy mackey
1

eteb3 has deleted 3 turn restrictions a few hours back. Now it looks good to me.

(30 Aug '21, 21:59) TZorn

Thanks etab3

(31 Aug '21, 08:48) andy mackey
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question asked: 29 Aug '21, 23:26

question was seen: 1,030 times

last updated: 06 Sep '21, 10:25

NOTICE: help.openstreetmap.org is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum