Hello Eugene,
As mentioned in a previous mail
<https://lists.openstreetmap.org/pipermail/talk-ph/2021-April/006734.html>,
I've already added the designation values that you previously proposed
to the documentation on the road classification page
<https://wiki.openstreetmap.org/wiki/Philippines/Mapping_conventions/Roads/Classification>.
These are:
national_primary_road
national_secondary_road
national_tertiary_road
provincial_road
municipal_road (also serves for city roads so that we don't need to
retag when towns become cities)
barangay_road
Adding expressway seems to be a no-brainer. I also like the suggestion
of a separate designation for city roads as I think the reduced
potential for confusion outweighs the effort needed for retagging when
municipalities become cities.
As for the specific values, I find the previous variant that includes
the road suffix much better because it's a clear distinction from
designation for administrative entities (especially for barangay roads
where the value without suffix would be identical).
Regards,
Timmy
On 22/05/2021 16:34, Eugene Alvin Villar wrote:
HI Jherome,
I forgot to add, I think we should also include tagging the official
legal classifications of roads using the "designation" key:
https://wiki.openstreetmap.org/wiki/Key:designation
<https://wiki.openstreetmap.org/wiki/Key:designation>
I think we can have the following values: "expressway", "national",
"provincial", "city", "municipal", and "barangay". We might also need
to break down the "national" value into "national_primary",
"national_secondary", and "national_tertiary" following the DPWH classes.
~Eugene
On Sun, May 16, 2021 at 5:02 AM Jherome Miguel
<[email protected] <mailto:[email protected]>> wrote:
Hi, everyone,
It's been a month since the last discussion on road
classifications, that time regarding special considerations for
major roads within certain islands as well as missing road links
and bypass/diversion roads under construction. Now, I'll be
presenting the final version of the proposal at
https://wiki.openstreetmap.org/wiki/Philippines/Mapping_conventions/Roads/Classification
<https://wiki.openstreetmap.org/wiki/Philippines/Mapping_conventions/Roads/Classification>.
Summary of the proposed guidelines:
- Motorway = Expressways (HSH-1 standard)
- Trunk = highways between large cities; HSH-2 expressways (none
existing yet). In large urban areas composed of many large cities
like Manila or Cebu, should be applied sparingly and limited to
primary through routes across the area that are not expressways
and connect with longer trunk routes. Trunk routes should
generally be moved to bypasses where they exist.
- Primary = highways between small cities, large municipalities
and provincial capitals that are neither cities or large
municipalities; major arterials in urban context.
- Secondary = highways between medium-sized municipalities; minor
arterials in urban context.
- Tertiary = roads between small municipalities and most
barangays; collector roads in urban context.
- Unclassified = other local roads that are not residential in
nature; other smaller roads connecting sitios and puroks in rural
areas
- Residential = residential streets
- Track = farm or forestry tracks
- Service = driveways, parking lot roads, alleys, emergency median
openings on expressways
Some factors that can affect choice of classification are:
- administrative designation
- connectivity
- existing network topology (particularly relevant in small
islands where there are few major roads)
- function (expressway, major/minor arterial, collector, local)
- physical qualities (no. of lanes, shoulders, road width,
presence of median/center island)
- sizes of settlements served
I want anyone's final say here before we can adopt them as
guidelines in our main mapping convention page.
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