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92
http://cmap.m-plex.com/tools/manual_points.php
Quote
There are common exceptions to positioning at centerline crossings, such as interchanges where ramps connect nearby, non-intersecting highways, or where a short access road connects a road to another with a trumpet or similar interchange. In these cases, the waypoints for the same interchange on the separate highways cannot be at the same coordinates. Instead, the waypoints should be where the connecting ramps or access road interchange with each highway.
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In-progress Highway Systems & Work / Re: usaga (Georgia State Highways) - Preview
« Last post by ntallyn on March 13, 2019, 09:29:34 pm »
Work has gotten in the way recently. Looks like it will be a couple more weeks before I can put in any significant time. Still working through the comments.
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I am open to all possibilities.

You just hit on some of the reasons I haven't made introducing such a connector system, beyond the fact it would take time to develop.

The only reason it's a problem for me is that if my students are finding the shortest route between two points, it's not going to be possible to use the NY Thruway, much, for example.  I can easily enough explain why that is but it would be nice to remove oddities like this that can cause confusion at first.
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In-progress Highway Systems & Work / Re: Australia N/A/B/M1
« Last post by si404 on March 13, 2019, 07:56:13 pm »
I'd wait on doing any in Tasmania until I fix all the out of bound longitudes.
I've taken the liberty of doing this.
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I was planning to look at the rest of the Ohio Turnpike within the next few days.  I can type up a list in a separate topic of ones that may need graph connections.

Thanks for the offer, but I will do this sometime later this spring.

The lack of graph connections is going to be a natural consequence of the trumpet interchanges, though.

There are a lot of locations where separating the points isn't necessary. Most of these trumpet interchanges connect only two routes.

As much as I'd like to fix graph connections, there are many places on toll roads most commonly where it just makes sense to have separate points.

I thought I had a topic about this somewhere here or in a GitHub issue, but I'm not finding it.  The idea in the back of my mind for a few years now is to introduce a new (likely non-clinchable, but eventually preview- or active-level so it would get into graph generation) system to provide the segments that would turn into the missing edges.  The case closest to home for me is NY I-90's 27(NYST) and NY NY30's I-90, which would be connected by an edge that essentially represents the ramp.

A sample ny.nyexit27ramp.wpt (or something like that) file might look like this:

Code: [Select]
NY30 http://www.openstreetmap.org/?lat=42.926807&lon=-74.199686
I-90 http://www.openstreetmap.org/?lat=42.922932&lon=-74.196424

An additional system of connectors between routes without current graph connections seems like an overly complicated solution to a problem (if this is indeed a problem). If you want graph connections there, why not just put them where the routes cross, rather than introducing extra segments that someone will undoubtedly want to clinch? Introducing another grab-bag system will undoubtedly create more problems down the road.
97
As much as I'd like to fix graph connections, there are many places on toll roads most commonly where it just makes sense to have separate points.

I thought I had a topic about this somewhere here or in a GitHub issue, but I'm not finding it.  The idea in the back of my mind for a few years now is to introduce a new (likely non-clinchable, but eventually preview- or active-level so it would get into graph generation) system to provide the segments that would turn into the missing edges.  The case closest to home for me is NY I-90's 27(NYST) and NY NY30's I-90, which would be connected by an edge that essentially represents the ramp.

A sample ny.nyexit27ramp.wpt (or something like that) file might look like this:

Code: [Select]
NY30 http://www.openstreetmap.org/?lat=42.926807&lon=-74.199686
I-90 http://www.openstreetmap.org/?lat=42.922932&lon=-74.196424
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The lack of graph connections is going to be a natural consequence of the trumpet interchanges, though.
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I was planning to look at the rest of the Ohio Turnpike within the next few days.  I can type up a list in a separate topic of ones that may need graph connections.

Otherwise, I agree with what you did here.
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I'll look into this next weekend.
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