County Road Naming

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Re: County Road Naming

Postby sketch » Tue Jul 30, 2013 2:24 pm

Some of the mile roads might even be considered unpaved minor highways! :lol:


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Re: County Road Naming

Postby sketch » Mon Jul 29, 2013 6:08 pm

Oh, sure, don't hesitate to upgrade certain local roads to "primary street" if it makes sense to do so. That's pretty much a judgment call. Last I looked, Detroit is in pretty bad shape with respect to Primary Streets.


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Re: County Road Naming

Postby sketch » Mon Jul 29, 2013 5:27 pm

Riamus wrote:Since that time, county highways were added for all regions except region E, which represents the "thumb" area of the lower peninsula.

Hah, and here I thought they were just being nice to us by choosing not to include anything our clients might pronounce as "East"!
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Re: County Road Naming

Postby sketch » Mon Jul 29, 2013 4:15 pm

In general, rural routes should be set at a higher level than equivalent routes in built-up areas. Even though they're typically narrow, they still carry high-speed traffic, and are still used for medium- to long-distance routing.

Based on the standards set forth in the Wiki, the Primary Street type is only used for edit intra-city travel; any route used for inter-city travel should be a Minor Highway or higher. "Main Street" small towns, which typically sit along or at the intersection of inter-city routes, won't typically have any Primary Street class routes at all, below a certain size, perhaps unless they are accessed by small collector roads off a main route. I don't think that's very common with Southeast Michigan's grid system, though.

So basically, if a county highway connects towns, it should probably be a Minor Highway. If it's a smaller main road that only serves a town or possibly two towns in close proximity, Primary Street could do.

And since there are necessarily going to be sort of a lot of highways, making all US routes Major Highway is a good way to distinguish them.
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Re: County Road Naming

Postby sketch » Mon Jul 29, 2013 1:50 am

robc007 wrote:I drove through Pellston this week and was able to extend some of the county routes for you.

Unless I'm mistaken, county routes are generally "Primary Street" and the state routes are generally "Minor Highway".

My impression is that the US routes should also be "Minor Highway" unless they are divided and limited access, etc. However, someone has made all of the US routes in northern Michigan into "Major Highway". This is something that I would like to make more consistent with southern Michigan, but my editing area isn't large enough to make any of those changes.

That was originally how we did it here in Louisiana, but since there is no real functional difference between major and minor highways, we decided to make US highways Major and Louisiana highways Minor, essentially for display purposes. These are minimums, so a more important state highway can be Major and, of course, a freeway in either system can be Freeway.
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Re: County Road Naming

Postby sketch » Wed Jul 17, 2013 7:46 pm

Based on the signs, I would recommend "CR-B15" as the format. There's no hyphen, and the sign says "County", and doesn't say "Highway". I think that's plenty clear enough.

TTS should say "County Road B Fifteen" for that.

Exits that share a milepost are designated with numbers, e.g., "Exit 235B". In my area, that's how they are displayed on the big green signs, and that's how they are on the Waze map as well: "Exit 235B: Canal St / Superdome". It is pronounced properly, as you might expect, "Exit Two Thirty-Five B, Canal Street, Superdome". I imagine it would work the same with the letter before the number, then.

Not sure about "PA-1", but I know that "LA-1" is prononuced as "L A One". As for the other letters, none of them stand for anything. Michigan smartly skips from D to F in their county road designations and stops before N, so we don't have to worry about any cardinal directions slipping into there.
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Re: County Road Naming

Postby sketch » Wed Jul 17, 2013 7:00 pm

What do the signs look like?

State highways and all lesser numbered roads are considered on a state-by-state basis, according to regional usage. That's why we specifically do not have a "standard" for this -- each state has its own system, and therefore its own nomenclature. (While there may also be regional nomenclatures for US Routes and Interstate highways, these are nationwide systems, and therefore have nationwide standards.) Maybe it's easier to look at per-system rather than per-state. Either way, as long as each state's standard matches local usage and looks something like "State Hwy xx", "SR-xx", "M-xx", or "LA-xx", it should be fine. (We shouldn't spell out what can be abbreviated -- TTS will read "SR" as "State Route" -- but we also cannot abbreviate what must be spelled out -- TTS does not expand "SH" to "State Highway".)

TTS expands "CR" to "County Road", so we should maybe consider using that for the sake of brevity. Perhaps someone looking at "CR" out of context wouldn't know what it means, but in context it should be relatively easy to understand, I would think -- especially once the user hears "County Road" spoken aloud.

Before making a decision, I would want to know (1) what the signs say and (2) what street/postal addresses on these roads look like before ditching the letter. "CR-B-15" looks weird, "CR-B15" should be okay.
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Re: County Road Naming

Postby robc007 » Mon Jul 29, 2013 6:39 pm

I'm in the region pretty much devoid of county highways. I'm having the opposite problem down here. Some of the "primary streets" as would seem to be depicted on the State website are not paved. Most of that information is helpful, but when I find gravel roads I just set them as gravel roads. Maybe it gets plowed a bit sooner than its neighboring gravel roads in the winter, but I'm still not gonna drive on gravel. There is value in sorting this stuff out.
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Re: County Road Naming

Postby robc007 » Mon Jul 29, 2013 6:15 pm

Detroit can't afford primary streets. :}
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Re: County Road Naming

Postby robc007 » Mon Jul 29, 2013 5:54 pm

Thanks for the explanations. I'll upgrade those roads again tonight.

I still think it makes sense to use "primary street" on some of the more useful county roads. I've done this along the I-94 corridor west of Ann Arbor and it makes the map more informative.
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