Author Topic: nplh: Nepal Highways  (Read 645 times)

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Offline michih

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nplh: Nepal Highways
« on: June 30, 2021, 03:44:27 pm »
System is in preview and seems to be ready for peer-review: https://travelmapping.net/hb/index.php?sys=nplh
The system has 24 routes for more than 2,100 miles.

Please report issues here.

Offline Bickendan

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Re: nplh: Nepal Highways
« Reply #1 on: June 30, 2021, 07:59:39 pm »
Cursory glance:
H01 and AH 2: pull IND/NPL back to http://www.openstreetmap.org/?lat=26.644611&lon=88.162537, as OSM and Google agree on the border here, and where I have the terminal point for NH 327B and AH 2 on the West Bengal side.
Western end is a mess because the route physically into India and back, and both OSM and Google are in agreement on the border here.

Recenter NPL/IND to http://www.openstreetmap.org/?lat=28.993098&lon=80.122151

New .wpts - indut.nplh001.wpt? ; indut.ah002npl.wpt : NPL/IND http://www.openstreetmap.org/?lat=28.993098&lon=80.122151
+x1 http://www.openstreetmap.org/?lat=28.992723&lon=80.121931
IND/NPL http://www.openstreetmap.org/?lat=28.992247&lon=80.121851

New .wpts - npl.h001ind.wpt ; npl.ah002utt.wpt : IND/NPL http://www.openstreetmap.org/?lat=28.992247&lon=80.121851
+x1 http://www.openstreetmap.org/?lat=28.991796&lon=80.122105
NPL/IND http://www.openstreetmap.org/?lat=28.991691&lon=80.121650
Nepal H01
India H01 Nepal
Nepal H01 India (not confusing at all...)

[India AH 2 West Bengal]
Nepal AH 2
India AH 2 Nepal
Nepal AH 2 Uttarkhand
[India AH 2 Uttarkhand]

H02: Recenter the NPL/IND point onto the borderline (will help when I draft NH 527D). Add a shapepoint at the curve just east of there so the traceline doesn't cross into India and back.

H03: NPL/CHN needs to be recentered, as well as a few shapepoints -- one shapepoint is in China and not on H03.

H04, 05, 13, 18, 18Ghu: Without more than a cursory glance, looks okay. However, if Nepal winds up being subdivided into states/provinces, shape points may be desired to avoid border hops.

H06: NPL/IND recenter

H08: NPL/IND recenter (NH 527). Point needed between India and H17? OSM shows an F62 at Biratngar [sic] Main Rd; Google shows this as Main Road (South).

H10: NPL/IND recenter (NH 24). Add point at Devdaha Marg in Tilottama.

H12: NPL/IND recenter (NH 927).

H14: NPL/IND recenter (UP 90). Recenter/add shape points to avoid border hops into Uttarkhand and possible trace crossings with NH 9. OSM also indicates that H14 extends further north than the END point? 

H16: Add point at University Path.
NakRd -> F103
Add point at next major intersection (no name in OSM, Google shows Ekantakuna Rd)
Add point F72
Add point F90
SinRd -> SinMarg
PasMar -> PasSad
Add point Dhumbarahi Marg
Recenter F25
Add point Tokha Sadak (F82?)
Add point Balaju Machha Pokhari Bypass
Add point Siddhicharan Sadak
Add point Ropeway Sadak
Add point F75 (Museum Marg)

H17Dha: IND/NPL -> END no indication of a border crossing here either in OSM or Google. Shapepoints needed just east of H14 to avoid border skips into Uttar Pradesh.

I'll note this here in case the F routes get drafted at some point for the eastern end of F38: Its terminal point is WB 12 as WB 12 physically crosses into Nepal.
[IND-]WB12 http://www.openstreetmap.org/?lat=26.948550&lon=88.122126
« Last Edit: June 30, 2021, 08:02:20 pm by Bickendan »

Offline michih

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Re: nplh: Nepal Highways
« Reply #2 on: May 18, 2022, 02:55:01 pm »
@Bickendan Will you complete the review or should / can I do it?

Offline Bickendan

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Re: nplh: Nepal Highways
« Reply #3 on: May 20, 2022, 06:02:39 pm »
You can go ahead. My aim at the time was making sure the crossings into India were good, and I never got to finishing the rest of the review.

Offline michih

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Re: nplh: Nepal Highways
« Reply #4 on: May 21, 2022, 12:13:26 pm »
Ok, I'll review the system down the road...

Offline michih

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Re: nplh: Nepal Highways
« Reply #5 on: June 26, 2022, 03:15:51 pm »
Initial look.

AH42:
Is fucked up through Kathmandu, incorrect order b/n H02/H16 and H03/H16


H01:
The route does NOT entirely cross the border line on OSM nor GM. I'd merge IND-UT H01 and NPL H01Ind into the main route (concurrent AH2 too). I don't understand Bickendan's text upthread on this.


H02:
wikipedia map on the right, GM (name, not number) and OSM indicate the route through Birgunj, not via the bypass
North end in Kathmandu is also different to what we have in HB. Did you have another source? If not, truncate it.


H03:
Same here. West end in Kathmandu is different on OSM, GM and wikipedia. None confirms the HB end.


H06:
Does it really extend south of Bardibas as OSM, Esri and Jawg suggest? GM, Here and EN wikipedia do not confirm it. However, Germans do :D


H12/H13:
The transition is in Bangesimal according to OSM, Jwag and wikipedia map. The HB transition in Birendranagar is confirmed by GM and wikipedia text though. The 113km length of H12 from wikipedia suggests the transition in Bangesimal. The 232km for H13 also matches.
Based on the 232km H13 length, the northern end should be in Chandannath, not at the airport.


H15:
East end should be north of the bridge


H17:
Is completed since November 2020: https://en.wikipedia.org/wiki/Postal_Highway Please update the route


H18:
East end should be at http://www.openstreetmap.org/?lat=27.268482&lon=88.030776 (Chiyo Bhanjyang, border to India) according to OSM and wikipedia.

The two western routes are not yet connected but the gap seems to be smaller now:
H18Man extends to http://www.openstreetmap.org/?lat=28.758720&lon=82.005901 according to OSM
H18 does not extent but another H18 route seems to start just west of the river from http://www.openstreetmap.org/?lat=28.625926&lon=82.173907 to http://www.openstreetmap.org/?lat=28.715944&lon=82.062190

I'll continue the review once this will be checked.


Note: The first expressway is scheduled to be opened in 2024 now. I don't know if it should be H20 or E20.

Offline Bickendan

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Re: nplh: Nepal Highways
« Reply #6 on: June 28, 2022, 02:29:03 am »
Quote from: michih
H01:
The route does NOT entirely cross the border line on OSM nor GM. I'd merge IND-UT H01 and NPL H01Ind into the main route (concurrent AH2 too). I don't understand Bickendan's text upthread on this.
Looks like the mapping fidelity was tightened since I made my comments a year ago. Wish the same had happened in West Bengal for the IND sets.