Re: [Talk-us] Motorway vs trunk

2010-02-26 Thread Dave Hansen
On Fri, 2010-02-26 at 15:50 -0500, Richard Welty wrote:
 On 2/26/10 3:14 PM, Nakor Osm wrote:
 
  What is the distinction made between trunk and motorways for tagging 
  in the US. As an example should this portion of US41 ( 
  http://www.openstreetmap.org/?lat=41.8967lon=-87.6177zoom=14 
  http://www.openstreetmap.org/?lat=41.8967lon=-87.6177zoom=14 ) be 
  a motorway or a trunk?
 for all practical purposes, a trunk is a motorway-wannabe, but with 
 grade level crossings of
 some sort, either with stop signs for the lesser roads, or traffic 
 lights. you generally won't
 see driveways or businesses directly on trunks, there will often be 
 frontage roads for that.
 
 the portion of US 41 you point out is a bit schzoid, mostly grade 
 separated but with a scattering
 of grade level crossings. the points with grade level crossings should 
 certainly be trunk.

Well, it's going to look goofy on the map to have dotted green and blue
lines.

I'd say that you also need to consider how long the segment is.  I have
a divided road with fences on both sides and limited access near my
house.  There's a 25ft stretch of it with limited access.  Is that a
motorway for 25ft?  ;)

I think that motorways need to be relatively long.  At least a number of
miles of solid motorway to *be* a motorway.

-- Dave


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Re: [Talk-us] Motorway vs trunk

2010-02-26 Thread Alan Mintz
At 2010-02-26 12:50, Richard Welty wrote:
On 2/26/10 3:14 PM, Nakor Osm wrote:
  What is the distinction made between trunk and motorways for tagging
  in the US. As an example should this portion of US41 (
  http://www.openstreetmap.org/?lat=41.8967lon=-87.6177zoom=14
  http://www.openstreetmap.org/?lat=41.8967lon=-87.6177zoom=14 ) be
  a motorway or a trunk?
for all practical purposes, a trunk is a motorway-wannabe, but with
grade level crossings of
some sort, either with stop signs for the lesser roads, or traffic
lights. you generally won't
see driveways or businesses directly on trunks, there will often be
frontage roads for that.

Agreed. IMO, what downgrades a motorway to a trunk is the presence of 
anything that stops traffic on the main roadway for intersecting traffic 
(signals, stop signs, or yield signs). Really, anything more than just a 
very occasional road intersection that does not occur via ramps, or 
driveway, should be grounds to call it a trunk (or even lower).

In the example, I'd call US41 trunk from Monroe St down to Waldron Dr, and 
motorway above and below that (at least for the area I looked at), simply 
based on the appearance of ramp-style intersections vs. 
traffic-signal-controlled perpendicular intersections. I'm guessing that 
speed limits would give further justification.

--
Alan Mintz alan_mintz+...@earthlink.net


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Re: [Talk-us] Motorway vs trunk

2010-02-26 Thread Richard Weait
On Fri, Feb 26, 2010 at 3:55 PM, Dave Hansen d...@sr71.net wrote:
 On Fri, 2010-02-26 at 15:50 -0500, Richard Welty wrote:
 the portion of US 41 you point out is a bit schzoid, mostly grade
 separated but with a scattering
 of grade level crossings. the points with grade level crossings should
 certainly be trunk.

 Well, it's going to look goofy on the map to have dotted green and blue
 lines.

 I'd say that you also need to consider how long the segment is.  I have
 a divided road with fences on both sides and limited access near my
 house.  There's a 25ft stretch of it with limited access.  Is that a
 motorway for 25ft?  ;)

Yikes, Dave.  Somebody could take you at face value and suggest that
on the wiki.

 I think that motorways need to be relatively long.  At least a number of
 miles of solid motorway to *be* a motorway.

Exactly.  Consider the whole road.

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[Talk-us] National Forest signs

2010-02-26 Thread Alan Mintz
How should one tag the name signs at the entrance to a national forest 
(e.g. 
http://sites.google.com/site/am909geo/osm-1/DSCS5938_small.jpg?attredirects=0d=1
 
)?

boundary=national_park is an error according to JOSM rendering rules.
landuse=forest renders and icon in JOSM, but I thought landuse=* was 
generally for areas?


--
Alan Mintz alan_mintz+...@earthlink.net


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