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 <[email protected]
<mailto:[email protected]>> 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
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