Author Topic: jpne: Japan Expressways  (Read 1222 times)

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Offline si404

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Re: jpne: Japan Expressways
« Reply #15 on: Today at 06:05:42 am »
Should all u-turn-only exits be included?
I would like to add them, though there's no should about doing so.

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Is N# how national highways should be referenced?
It's how I have referenced them - it seemed logical with the E for Expressways. Have you another suggestion?

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Did you use E1A, E1 and E20 as names because their numbers (1, 4-1, 6) did not match the normal exit number sequence?
Yes. Thoughts from the floor on this.

Alternatively I could call them 1(E1A), 4-1(E1) and 6(E20) - as numbered exits from another route's exit numbering system, but that strikes me as rather pointless.

Offline si404

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Re: jpne: Japan Expressways
« Reply #16 on: Today at 06:07:48 am »
I apologize for being unclear about why I asked this question.  I don't know the future plans for Japan - divided or undivided.  If Japan is an undivided country I don't need to worry about  prefectural boundaries.
I found it clear. No plans to split Japan at this time. We'll cross that bridge if we come to it.

Offline nezinscot

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Re: jpne: Japan Expressways
« Reply #17 on: Today at 12:23:24 pm »
Thanks for the clarifications.

I decided to work my way north - Kyushu to Hokkaido.  I thought things would be simpler down south. They aren't.  Here are a few updates for some of the shorter Kyushu expressways.

E77Kum
a) has new exits IC2 and IC3

E77Tak - new road
a) There is an additional section of E77 open. It is a tunnel between N218 in Takachiho and a farm road that leads to N218. I suggest using Tak(achino) as the name -  it's a popular tourist site.

E96
a) E96 branches just before exit 11-3. Branch A goes to P113. Branch B goes to P235 and is part of the current entry for E96.  A new entry for Branch A is needed.
b) I would use E34 instead of 11 as the first exit name.  11 is the exit number on E34 for getting on E96.

E97
a) You might be able to use the IC numbers instead of route numbers:  N10(1), ToN213(Jct2), P4(3).  E97 is made up of three pre-existing roads. I don't know if the numbers being sequential is a fortuitous accident, or not.
b) Exit IC4 does not have a waypoint. It goes to P404.

E98
a) E98 starts at IC5, not IC4-1. The highway between IC4-1 and IC5 appears to be a branch of E10.  It is definitely a part of the Miyazaki Expressway.  I used GSV to look for E10/E98 signage, but didn't find any in the 2017-18 street views.  The Japanese wikipedia page for the Miyazaki IC (5) says that it is on E10 and that E98 is a connecting road.
b) We probably need a new entry for the E10? branch between IC4-1 and IC5.

Offline nezinscot

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Re: jpne: Japan Expressways
« Reply #18 on: Today at 05:00:21 pm »
More Kyushu.

E3AYat
a) The existing exit numbers should be 1 thru 5 (1-1 became 2).
b) The road has been extended and now ends at IC6.

E3AIzu
a) The road now starts at IC9.

E3
a) There are four new ICs to add:  4-2, 14-1, 19-1, and 25-2.