Re: [OSM-talk] Turn restriction docs

2008-11-30 Thread Ulf Lamping
Cartinus schrieb: On Sunday 30 November 2008 03:07:02 Ulf Lamping wrote: I've just added a table to that wiki page that tries to map existing road signs to the corresponding restriction values. I don't know if this is the same everywhere in Europe, but sign 7b (the only square sign in the

Re: [OSM-talk] Turn restriction docs

2008-11-30 Thread Ulf Lamping
David Earl schrieb: On Sunday 30 November 2008 03:07:02 Ulf Lamping wrote: I've just added a table to that wiki page that tries to map existing road signs to the corresponding restriction values. In most situations where you see these signs they are used in conjunction with a No Entry at

Re: [OSM-talk] Turn restriction docs

2008-11-30 Thread Erik Johansson
On Sun, Nov 30, 2008 at 2:25 AM, Frederik Ramm [EMAIL PROTECTED] wrote: I want a situation where the two parts of the road are unambiguously identified by the from and to members, meaning that if any of these do not start/end at the junction they have to be split. What do you think of using

Re: [OSM-talk] Turn restriction docs

2008-11-30 Thread Nic Roets
On Sun, Nov 30, 2008 at 3:25 AM, Frederik Ramm [EMAIL PROTECTED] wrote: For the record, I am strongly opposed to automated processing of the restriction ... My guess is that your opposition is based on the fact that some (future) routing system may not have enough information to calculate

Re: [OSM-talk] Turn restriction docs

2008-11-30 Thread Frederik Ramm
Hi, Nic Roets wrote: My guess is that your opposition is based on the fact that some (future) routing system may not have enough information to calculate angles esp. when non-junction nodes was removed during prepossessing. I simply want a clear, non-interpreted rule that identifies the

Re: [OSM-talk] Turn restriction docs

2008-11-30 Thread Nic Roets
On Sun, Nov 30, 2008 at 8:02 PM, Frederik Ramm [EMAIL PROTECTED] wrote: thinking of a T shaped junction where maybe someone adds a sharp right turning service Which can be hacked^H^H^H^H^H^H solved by relaxing the current requirement for angles to be multiples of 90 degrees. So we have 4

Re: [OSM-talk] Turn restriction docs

2008-11-30 Thread Stephen Hope
As well as You can't do this and You must do this we need You may do this (that normally you can't). Where I live, you can't do a U-turn at traffic lights unless there's a sign that says you can. If we try and mark this by putting relations at every light banning U-turns, we'll just end up with

[OSM-talk] Turn restriction docs

2008-11-29 Thread Erik Johansson
I've been looking at the 100 or so turn restrictions[1] in use, and most of them don't follow the spec set up on the wiki making the description very confusing. Considering how complicated relations feels I'm asking here instead of just changing the wiki:

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Nic Roets
I think you are right, Ed. A grep of relations-latest.osm.bz2 shows 1930 occurrences of tag k=type v=restriction /. bzgrep 'tag k=restriction' relations-latest.osm.bz2 |sort |uniq -c |less |sort -nr 815 tag k=restriction v=no_left_turn / 550 tag k=restriction v=no_right_turn /

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Erik Johansson
On Sat, Nov 29, 2008 at 5:58 PM, Ed Loach [EMAIL PROTECTED] wrote: Erik wrote: I've been looking at the 100 or so turn restrictions[1] in use, http://www.openstreetmap.org/api/0.5/relations/search?type=typevalue=restriction seems to omit at least the no_right_turn restriction I added in

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Nic Roets
On Sat, Nov 29, 2008 at 7:52 PM, Erik Johansson [EMAIL PROTECTED] wrote: But using OSM XAPI I still get results that differ from Nics. #curl -gl

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Erik Johansson
On Sat, Nov 29, 2008 at 3:52 PM, Nic Roets [EMAIL PROTECTED] wrote: Perhaps it will make things simpler for the user if 'via' could be left out, but changing gosmore not to rely on the via node anymore may prove very difficult. And rendering software may also need the via node. Ok.. so do you

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Nic Roets
On Sat, Nov 29, 2008 at 8:31 PM, Erik Johansson [EMAIL PROTECTED] wrote: Ok.. so do you use two via nodes to resolve the left/right turn issue with out using lat/lon? No. gosmore expects exactly one 'via' object and it must be a node. So complicated (multistate) restrictions aren't

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Scott Atwood
Perhaps someone who understands how this feature works should add a few examples of ways that have been properly tagged as turn restrictions. I recently added several turn restrictions in this vicinity, and I admit I was quite confused by the documentation, but I did the best I could. After this

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Scott Atwood
Perhaps someone who understands how this feature works should add a few examples of ways that have been properly tagged as turn restrictions. I recently added several turn restrictions in this vicinity, and I admit I was quite confused by the documentation, but I did the best I could. After this

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Nic Roets
On Sat, Nov 29, 2008 at 10:04 PM, Scott Atwood [EMAIL PROTECTED]wrote: Perhaps someone who understands how this feature works should add a few examples of ways that have been properly tagged as turn restrictions. I recently added several turn restrictions in this vicinity, and I admit I was

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Nic Roets
On Sat, Nov 29, 2008 at 11:48 PM, Scott Atwood [EMAIL PROTECTED]wrote: This is actually quite a complicated intersection. Arroyo Way is a two-way street that Ok, I've read you're description and it looks like my assumptions about southbound traffic on S 17th was correct. The next step would

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Frederik Ramm
Hi, Nic Roets wrote: At T junctions the ambiguity is resolved using restriction=no_left_turn/no_right_turn. For the record, I am strongly opposed to automated processing of the restriction except to see if it is only... or no I want a situation where the two parts of the road are

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Ulf Lamping
Erik Johansson schrieb: I've been looking at the 100 or so turn restrictions[1] in use, and most of them don't follow the spec set up on the wiki making the description very confusing. Considering how complicated relations feels I'm asking here instead of just changing the wiki:

Re: [OSM-talk] Turn restriction docs

2008-11-29 Thread Cartinus
On Sunday 30 November 2008 03:07:02 Ulf Lamping wrote: I've just added a table to that wiki page that tries to map existing road signs to the corresponding restriction values. I don't know if this is the same everywhere in Europe, but sign 7b (the only square sign in the table) does not mean