+1 For your trunck definition suggestion
On Tue, Mar 4, 2014 at 9:09 PM, Vincent Dawans <[email protected]> wrote: > Mamadou: > > Good to know Senegal is on task! Yes, now I see on the Senegal wiki page > the same issue I am raising. I think I agree with the comment about using > trunk for "maybe only the (roads) with the highest quality (at least two > lanes of good asphalt) and major topological roles." > > My take is that trunk designation should indeed be limited to paved roads > with at least 2 full size lanes (that means at least 7 meters wide = two > 3.5 meter lanes). 7 meters wide (+ 1.5 meters on each side, so total of 10 > meter wide base) is the new standard now used Senegal and Mali I think. > This is in line with the 3.5-meter wide European lane standard and the > 12-foot wide US lane standard. > > If Senegal is planning some sessions in 2014 that I feel it might be the > best place to make a proposal to further clarify the standards. I will > subscribe to the mailing list to stay in the loop. > > Sincerely, > > Vincent Dawans. > > > On 3/4/2014 12:51 PM, Mamadou bassirou THIAM wrote: > > Hi there, > > Welcome Vincent and many thanks for your message. > > Overall, I can confirm your remarks on West African ground. > > A first clarification to bring is that Highway Tag Africa > <http://wiki.openstreetmap.org/wiki/Highway_Tag_Africa> is actually an > initiative, for now. > > After an active mappy year, a stunning lack was the absence of a > consensual and appropriate > > data model for West Africa, roads in particular. You can go through the > Issues section of > > OSM Senegal Wiki > Project<http://wiki.openstreetmap.org/wiki/WikiProject_Senegal>that underline > same questions that you evoked. > > This situation is also linked to the real states of our West African roads > in question. > > Not easy to figure out the most appropriate OSM tag for each of them and > the Dakar's motorway is still being built (its a new one). > > But, It was necessary to start working with something to complete > further large discussions. > > Although incomplete this wiki is an important step to build the West > Africa data model and preset. > > It very helpful for OSM Senegal and the other HOT activations. > > More implication from our dear president will be much appreciated and I > think, even it's all wiki, > > it was written based on collective agreement, so I won't recommend a > single person to update it directly. > > There are two key events in our 2014 program that will help improve this > situation. > > Quality assurance sessions to redraw and finalize the SN highway layer and > > A workshop with mappers and organizations interested in OSM data to > determine how to > > rationalize harmonize our edits and how to make information matches needs. > > You can stay turned by subscribing to our mailing > list<https://lists.openstreetmap.org/listinfo/talk-sn>also. > > Discussions will re-open shortly, hope to catch you online or why not bump > into you in Dakar, since you're a traveler! > > MisterBass > Saint-Louis, Senegal. > http://twitter.com/bassthiam > > > > > > On Tue, Mar 4, 2014 at 1:20 PM, Mikel Maron <[email protected]> wrote: > >> Hi Vincent >> >> Welcome! I don't have direct experience of these roads, but from my >> perspective, sounds like a reasonable and informed approach. Hopefully >> people working in the region will share their ideas on this. I just wanted >> to say, that you should also feel free to contact directly other people who >> have edited the wiki page (check the History), and other people who have >> edited these roads in OSM. And yes, remember, it's all a wiki, so even if >> it's two steps forward, one step back, collaboratively getting everything >> into the commons doesn't require permission. >> >> Cheers >> Mikel >> >> * Mikel Maron * +14152835207 @mikel s:mikelmaron >> >> >> On Monday, March 3, 2014 9:15 PM, Vincent Dawans <[email protected]> >> wrote: >> >> Hello: >> My name is Vincent Dawans and I am a Senior Technical Advisor at Virtue >> Ventures, a technical firm dedicated to supporting NGOs and social >> enterprises in the developing world. As a technical advisor, I do a lot >> of traveling. I am currently traveling to West Africa every 3 months or so. >> I was last in Mali and got really impressed with the accuracy of the >> openstreetmap layer (I was using the MapWithMe android app that gets its >> data from openstreetmap); certainly the level of details in Bamako is quite >> impressive, enough that I was able to go on long walks through the back >> streets without ever getting lost. Seeing all that good work got me >> interested in getting involved. >> One of the organizations I work with is a village-banking organization >> around Kayes (Western Mali) and my plan is to give them gps receivers so >> they can start mapping the many villages in which they work. I got some old >> $25 gps receivers online that I will try using for that purpose... >> I also stared updating the map for Kayes itself (it needs some >> attention). However as I am looking at the "Highway Tag Africa" >> standards I am a bit confused as to the lack of mention of the >> "highway=trunk" and "highway=motorway" tags. >> I am going to take West Africa as an example since this is what I know. I >> feel like the main regional roads should be consistently marked as "trunk" >> and not merely "primary". Right now some sections are marked trunk, >> other primary. By "regional roads" I mean mostly the roads that are part of >> the new Trans-African Highway Network that is taking shape. The >> Trans-African Highway Network comprises a series of east/west and >> north/south roads crossing the continent. Here is a good overview of the >> Trans-African Highway Network: >> http://en.wikipedia.org/wiki/Trans-African_Highway_network >> My personal experience with that network is the Trans-Sahelian Highway >> (Trans-African Highway 5), more specifically its first section running from >> Dakar to Ouagadougou which I use on a regular basis. >> http://en.wikipedia.org/wiki/Dakar-Ndjamena_Highway. The section >> running from Dakar to Ouagadougou actually splits into 2 branches from >> Tambacounda, Senegal to Kita, Mali (one branch is the original northern >> road via Kayes Mali, and the other one is the brand new southern road via >> Kenieba and Kati, Mali.). >> I feel that these roads would benefit from being more consistently >> "upgraded" >> from primary to trunk because they are not only important roads for their >> respective countries but are in fact becoming the backbone of the road >> network in their respective regions and serve as the primary roads >> crisscrossing the continent. IMHO they fit the official trunk definition >> of "The most important roads in a country's system that aren't motorways." >> Whatever decision is made, some clarification is necessary because >> right now some sections of that network are already marked as trunk on the >> map, but in a very inconsistent manner, with some trunk roads becoming >> primary mid way without reflecting actual changes on the ground. Here is >> just one example for illustration purpose: in Senegal the trunk tag starts >> in Kaffrine and ends in Kotiari, then it becomes trunk once more in Mali >> between Segala and Bamako. In reality there is no reason why the >> Dakar-Kaffrine section and Tambacounda-Segala section should not be marked >> as trunk as well -- or all of it marked as primary; but not a mix of both... >> Additionally, the highway=motorway tag also needs to be clarified; on the >> map, motorways are already found, mostly in Northern and Southern Africa >> with some also starting to show up in East and West Africa. For instance >> right now there is a short motorway running from Dakar to Rufisque-- it's a >> real motorway, a restricted access road build as per international >> standards -- a first in West Africa I think. >> Hence I think the "Highway Tag Africa" guidelines would benefit from >> being expanded with trunk roads and motorway; if nothing to clarify the >> current mixed used of motorway, trunk and primary tags. I would love to >> know what the opinion of the community is on this matter. I am willing to >> help draft some changes to the guidelines if there is some buy-in for the >> general idea presented here. >> I am new to this mailing list and community, so I apologize if this was >> discussed earlier or if I am not fully informed about the issue. Thank you >> for reading my long (too long) email. >> Sincerely, >> Vincent Dawans >> >> _______________________________________________ >> HOT mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/hot >> >> >> >> _______________________________________________ >> HOT mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/hot >> >> > >
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