Re: [Tagging] US Speed Limits, truck routes, bike routes, access

2010-03-07 Thread Apollinaris Schoell
On Sat, Mar 6, 2010 at 12:43 AM, Paul Johnson ba...@ursamundi.org wrote:

 Alan Mintz wrote:

  1. How should one tag suggested speeds (usually around curves) like
  http://en.wikipedia.org/wiki/File:MUTCD_W1-4.svg with
  http://en.wikipedia.org/wiki/File:Advisory_Curve_Speed_English_25.svg ?
  Should I tag them as maxspeed=*? I can see being cited for exceeding it
  according to the blanket safe speed provisions in some vehicle
 codes[1].

 Don't.  They're meant to be a driving aid, but aren't a fast rule
 (or they'd be on a white sign, not a yellow one).


nothing in wiki and osmdoc has a view occurrences of advisory_speed=
makes sense and is self explaining



 
  In CA, the standard speed limit on freeways is 65mph normally, but 55mph
  for trucks and towing/towed vehicles. This results in 9 tags(!),
 providing
  more reason for some sort of scheme like maxspeed=freeway.


no please no more tags with fuzzy implicit meaning. this will create
complete confusion and requires evaluation of the state polygons. how can a
regular mapper and simple mapping tools evaluate such a tag in correct way.
an average newbie mapper should be able to understand a tag without reading
tons of docu.
Josm, Potlatch support templates and could fill in the default values to
make mapping easy.



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Re: [Tagging] US Speed Limits, truck routes, bike routes, access

2010-03-07 Thread Pieren
On Sun, Mar 7, 2010 at 7:14 PM, Apollinaris Schoell ascho...@gmail.comwrote:

 an average newbie mapper should be able to understand a tag without reading
 tons of docu.
 Josm, Potlatch support templates and could fill in the default values to
 make mapping easy.


I'm really irritated by such remarks. Your are also maybe one of the is_in
tag supporters because, hey, how can a simple tool find if an element is
inside a polygone or not. Asking people to put on all roads the ten or
twenty attributs making everyone happy like maxpeed, minspeed, averagespeed,
recommended_speed, blind_in_one_eye_drivers_speed, width, noexit, maxheight
is simply unrealistic, makes perhaps some lazy developers happy but is
definitely not making mapping easy.
Let the software do the boring and repetitive work for humans and not the
opposite.

Pieren
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Re: [Tagging] US Speed Limits, truck routes, bike routes, access

2010-03-07 Thread Paul Johnson
Randy wrote:

 Paul Johnson wrote:


The school zone ends where the next speed zone starts.  I'm not sure
what FHWA's thinking was with the End School Zone sign (what about
traffic that doesn't remember what the previous speed zone was
because they turned into the school zone at a midpoint?).


 In Texas, I think the End School Zone sign does serve a separate legal 
 purpose, beyond establishing the previous speed zone. Use of cell phones 
 while driving is prohibited in school zones. (I think we are allowed to 
 run over each other due to lack of attention in other areas.) As a general 
 rule, a speed zone sign will be found within 50-100 yards of the end of a 
 school zone.

All the more reason to omit the redundant End School Zone sign,
IMO; drivers should be focued on the task at hand at all times that
they are driving, not just in school zones.



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Re: [Tagging] US Speed Limits, truck routes, bike routes, access

2010-03-07 Thread Anthony
On Sun, Mar 7, 2010 at 4:24 PM, Paul Johnson ba...@ursamundi.org wrote:

 Anthony wrote:

  On Sat, Mar 6, 2010 at 3:43 AM, Paul Johnson ba...@ursamundi.org
 wrote:
 
  The school zone ends where the next speed zone starts.
 
 
  Hmm, I just checked a school zone near my house and I don't think that's
  correct.  The 35 Mph sign comes before for the End School Zone sign.  Do
 you
  have any source for that?

 Yeah, the US Manual on Uniform Traffic Control Devices.
 http://mutcd.fhwa.dot.gov/HTM/2003r1/part7/fig7b-03_longdesc.htm


That's the 2003 edition.  The 2009 edition removes that option.  See for
example http://mutcd.fhwa.dot.gov/htm/2009/part7/fig7b_05_longdesc.htm

 I thought school zones were designated by statute, not by sign.  The signs
  are just there to remind people of the statute.

 The signs themselves do have consistency standards at the national
 level.  Placing another speed limit sign before an end school zone
 sign suggests your local traffic engineer either can't read a manual
 or takes no pride in his job.


Yeah, whoever put that sign up there screwed up big time.  Still, for
mapping purposes we should map the actual school zone.
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