Road Types (USA) – comprehensive overhaul of drivable roads

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Re: Road Types (USA) – comprehensive overhaul of drivable ro

Postby sketch » Sun Mar 30, 2014 8:02 am

That'd be great, but I'm actually not sure it'd be possible both to do that and to keep a meaningful "avoid freeways" option—because states are inconsistent. Some put both freeways and expressways in the "other freeways and expressways" category, others just show the class as "other freeways" and classify expressways as "principal arterials".


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Re: Road Types (USA) – comprehensive overhaul of drivable ro

Postby sketch » Sun Mar 30, 2014 4:33 pm

A lot of the text in the wiki is old and has survived revisions without comment. It's really pruning we're trying to avoid, in case a roundabout is in the middle of a route. Same as at-grade connectors.


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Re: Road Types (USA) – comprehensive overhaul of drivable ro

Postby sketch » Sun Mar 30, 2014 5:49 pm

I tried all the examples from [url=https://www.waze.com/livemap/?zoom=15&lat=45.78328&lon=-108.50068&from_lat=44.08054&from_lon=-103.23101&to_lat=45.78329&to_lon=-108.50069]this post plus the route from Rapid City, SD to Billings, MT with the routing test, but all the results were the same in every case.
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Re: Road Types (USA) – comprehensive overhaul of drivable ro

Postby sketch » Mon Mar 31, 2014 3:22 am

No, good idea though. I will do that now. Hopefully the "infrastructural changes" take a little longer, long enough for Shirli to review.
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Re: Road Types (USA) – comprehensive overhaul of drivable ro

Postby sketch » Mon Mar 31, 2014 3:01 pm

Whoops. Fixed it.
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Re: Road Types (USA) – comprehensive overhaul of drivable ro

Postby sketch » Tue Apr 01, 2014 3:06 pm

Right, that's why county routes will be assigned type on a state-by-state basis. I mean simply to point out that some states will have county route systems that merit Primary Street. Louisiana's Parish Routes fit this; Michigan has some sort of dual system with both County Highways and County Roads, which are set differently.
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Re: urban versus rural

Postby sketch » Sun Apr 06, 2014 3:44 pm

dbraughlr wrote:I don't have a problem assigning MH to US numbered routes that are only two lanes with at least 3 miles out of 4 being passing zones. But 23 miles of double yellow lines on asphalt winding over a mountain with just a few slow traffic turnouts or "climbing lanes" cannot be function as MH because such a road simply isn't built to be MH even if the average speed on it is 40 mph and its urban MH segments are considerably slower.

I support requiring some minimum construction standards for road types. I oppose downgrading function based on traffic congestion.

Except that that 23-mile series of switchbacks and mountain roads is probably the only alternative route to a freeway that probably relies on a tunnel through the side of a mountain, a tunnel which might be closed for extended periods of time for whatever reason, or through which vehicles of a certain size or carrying certain things might not be able to travel.

In particular I'm thinking of the Eisenhower Tunnel (I-70) and Loveland Pass (US-6), but I'm sure there are plenty others. Just because a road is slow and winding doesn't mean it doesn't carry significant traffic, including all trucks taller than 13.9' and all carrying hazardous materials. And what exactly are the downsides of making such a road Major Highway? They wouldn't bother to build or maintain a road up there if it wasn't important to have one.
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Re: Road Types (USA) – comprehensive overhaul of drivable ro

Postby sketch » Sun Apr 06, 2014 4:09 pm

That eliminates one argument against this system. :D
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Re: Road Types (USA) – comprehensive overhaul of drivable ro

Postby sketch » Mon Apr 07, 2014 2:36 am

dbraughlr wrote:What is the downside of making it a freeway? After all, it is doing the job of the closed freeway.

It's not a freeway.

There are two types that work for long-distance routes: freeway and major highway. Those that are freeways are freeways. Those that are not are major highways.

This reflects functional class as well — the three classes represented by these two types in Waze are classified one way or another as "principal arterials".

Not that I really needed to explain that to you, I'm sure you understand that already. And those mountain pass roads are probably going to be classified as other principal arterials anyway.


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Re: Road Types (USA) – comprehensive overhaul of drivable ro

Postby sketch » Mon Apr 07, 2014 2:04 pm

dbraughlr wrote:I don't see how your statement "It's not a freeway" is somehow more valid than my statement "It is not a major highway either".

Because "freeway" is necessarily defined by physical configuration. It is the only type which remains as such. The entire point of this revision is to get away from using physical characteristics to define road type for all the other types because it does more harm than good.


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