Re: [Talk-in] classification for rural roads
Just went through the IRC Roads and Bridges handbook [1] and updated some sections of the wiki regarding village roads: http://wiki.openstreetmap.org/wiki/Tagging_Roads_in_India#Major_Roads 1) Asphalted roads that are wide enough just for a single car/small truck. There are no shoulders to these kind of roads and the road boundaries are usually hard walls built around farm land. so if some other car comes in the opposite direction, you certainly have to go back 100-200meters to let it pass. highway=unclassified lanes=1 2) Asphalted roads that are wide enough for a car/small truck, but with shoulders. so it is possible to let the car in opposite side to pass by moving over to road shoulder. highway=unclassified lanes=1.5 3) Asphalted roads that are wide enough for 2 cars or a bus. typically connects 2 main villeges. highway=tertiary lanes=1.5 or 2 According to the IRC standards, it seems like most rural roads would be unclassified or tertiary, with singe lane (3-3.5m) or intermediate lane (3.5-5.5m) Residential roads and living streets should be used for roads serving purely local residential traffic and not for traffic between villages. [1] http://saiindia.gov.in/english/home/Public_Folder/Professional_Practices_Group/State_Local_Manual/PUDUCHERRY_MANUAL/Wad%20Manual/Roads%20%20Bridges.pdf -- Arun Ganesh (planemad) http://en.wikipedia.org/wiki/User:Planemad http://j.mp/ArunGanesh ___ Talk-in mailing list Talk-in@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-in
Re: [Talk-in] classification for rural roads
One peculiar problem I faced while mapping in kerala is the villages are spread out, there are usually no village centers. Also many cases there is no hard boundary to separate two panchayths or even districts. Yes, there are hard boundaries for administrative purpose, but for most practical purpose there is only a blured line . So when I map in places not in my neighbourhood, it was always a problem. only think clear to me whether the road is wide enough to accomodate two vehicles or not. In such scenarios mapping tertiary based on connective village centers may not be feasible. Other think is many roads have a lot of curves, steep inclines, though wide enough average speed we can take in this roads are limited. Though they are good for small distances, best be avoided while travelling long distances. Regards Sunil On 03/28/15 20:43, I Chengappa wrote: If the roads you are mapping connect two villages / local population centres, then it should be sufficient to tag them as tertiary roads, (with the lane number information if you have it). That usage reflects the original meaning outside OSM of 'tertiary road', (similarly secondary roads connected towns, primary roads connected cities - a quite simplistic classification, but useful to bear in mind). Note that in the primary definitions there is no requirement that these be asphalted, metalled or anything else - this also is in agreement with the underlying meaning of the terms 'road' and 'highway'. They are defined primarily by their traffic and usage. For the first two options you mention, I see these problems - - a country lane or any other road that does not serve residential houses is not a residential road, pretty much by definition. - any road that requires drivers to pull over on to their shoulders to pass each other is not a two lane road, again almost by definition. I agree that there is a significant problem with the attempt to create a distinct road classification for India - yes that wiki page is still a list of suggestions mixed with opinions and discussions. I think that when you find it does not make sense for any particular situation, the best solution is to fall back on the basic and underlying OSM definitions e.g. at highway=residential http://wiki.openstreetmap.org/wiki/Tag:highway%3Dresidential. These definitions will return anyway, because they reflect both wider OSM practice, and often normal English usage, hence many contributors will keep using them. Thanks, user indigomc On 28 March 2015 at 11:14, Nura Uttelamiak uttelam...@gmail.com mailto:uttelam...@gmail.com wrote: Hi, I have been trying to map some of the roads around my area. I have seen quite a few types of roads around here. 1) Asphalted roads that are wide enough just for a single car/small truck. There are no shoulders to these kind of roads and the road boundaries are usually hard walls built around farm land. so if some other car comes in the opposite direction, you certainly have to go back 100-200meters to let it pass. 2) Asphalted roads that are wide enough for a car/small truck, but with shoulders. so it is possible to let the car in opposite side to pass by moving over to road shoulder. 3) Asphalted roads that are wide enough for 2 cars or a bus. typically connects 2 main villeges. I tried to look at http://wiki.openstreetmap.org/wiki/Talk:Tagging_Roads_in_India to see how these roads can be classified. It looks to me that one way to classify this would be for (1) = tag is as residential road and put lanes=1 (2) = tag it as unclassified road and put lanes=2 (3) = tag it as tertiary road and put lanes = 2. Could somebody comment if this is alright ? (i still can't make out if Tagging_Roads_in_India page contains a number of suggestions from different people which is still under discussion or if there is some consensus. if there is consensus, can someone familiar with it put a summary at the end of the page). thanks, arun ___ Talk-in mailing list Talk-in@openstreetmap.org mailto:Talk-in@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-in ___ Talk-in mailing list Talk-in@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-in ___ Talk-in mailing list Talk-in@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-in
Re: [Talk-in] classification for rural roads
If the roads you are mapping connect two villages / local population centres, then it should be sufficient to tag them as tertiary roads, (with the lane number information if you have it). That usage reflects the original meaning outside OSM of 'tertiary road', (similarly secondary roads connected towns, primary roads connected cities - a quite simplistic classification, but useful to bear in mind). Note that in the primary definitions there is no requirement that these be asphalted, metalled or anything else - this also is in agreement with the underlying meaning of the terms 'road' and 'highway'. They are defined primarily by their traffic and usage. For the first two options you mention, I see these problems - - a country lane or any other road that does not serve residential houses is not a residential road, pretty much by definition. - any road that requires drivers to pull over on to their shoulders to pass each other is not a two lane road, again almost by definition. I agree that there is a significant problem with the attempt to create a distinct road classification for India - yes that wiki page is still a list of suggestions mixed with opinions and discussions. I think that when you find it does not make sense for any particular situation, the best solution is to fall back on the basic and underlying OSM definitions e.g. at highway=residential http://wiki.openstreetmap.org/wiki/Tag:highway%3Dresidential. These definitions will return anyway, because they reflect both wider OSM practice, and often normal English usage, hence many contributors will keep using them. Thanks, user indigomc On 28 March 2015 at 11:14, Nura Uttelamiak uttelam...@gmail.com wrote: Hi, I have been trying to map some of the roads around my area. I have seen quite a few types of roads around here. 1) Asphalted roads that are wide enough just for a single car/small truck. There are no shoulders to these kind of roads and the road boundaries are usually hard walls built around farm land. so if some other car comes in the opposite direction, you certainly have to go back 100-200meters to let it pass. 2) Asphalted roads that are wide enough for a car/small truck, but with shoulders. so it is possible to let the car in opposite side to pass by moving over to road shoulder. 3) Asphalted roads that are wide enough for 2 cars or a bus. typically connects 2 main villeges. I tried to look at http://wiki.openstreetmap.org/wiki/Talk:Tagging_Roads_in_India to see how these roads can be classified. It looks to me that one way to classify this would be for (1) = tag is as residential road and put lanes=1 (2) = tag it as unclassified road and put lanes=2 (3) = tag it as tertiary road and put lanes = 2. Could somebody comment if this is alright ? (i still can't make out if Tagging_Roads_in_India page contains a number of suggestions from different people which is still under discussion or if there is some consensus. if there is consensus, can someone familiar with it put a summary at the end of the page). thanks, arun ___ Talk-in mailing list Talk-in@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-in ___ Talk-in mailing list Talk-in@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-in
