Re: [Talk-us] [OSM-talk] Check my junctions - looking for someone to review my plates of spaghetti -- responding to feedback

2012-01-24 Thread Nathan Edgars II

On 1/24/2012 7:07 AM, dies38...@mypacks.net wrote:

Thanks for your feedback, both positive and negative.  The reason for the 
complexity and seeming overuse of ways and restrictions is that I am mapping 
legally binding pavement markings along with the actual travel ways.  It is my 
understanding that pavement markings are as enforceable as stop signs and 
traffic lights and, therefore, are subject to key:access type treatment, such 
as through use of turn restriction relations.
I don't know about Pennsylvania, but here in Florida a single white line 
does not legally prevent crossing. But even if it did, we don't map a 
double yellow as a median.


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Re: [Talk-us] [OSM-talk] Check my junctions - looking for someone to review my plates of spaghetti -- responding to feedback

2012-01-24 Thread Anthony
On Tue, Jan 24, 2012 at 7:31 AM, Nathan Edgars II nerou...@gmail.com wrote:
 I don't know about Pennsylvania, but here in Florida a single white line
 does not legally prevent crossing. But even if it did, we don't map a double
 yellow as a median.

*You* don't map a double yellow (I assume you mean a double double
yellow) as a median.

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Re: [Talk-us] [OSM-talk] Check my junctions - looking for someone to review my plates of spaghetti -- responding to feedback

2012-01-24 Thread Nathan Edgars II

On 1/24/2012 8:33 AM, Anthony wrote:

On Tue, Jan 24, 2012 at 7:31 AM, Nathan Edgars IInerou...@gmail.com  wrote:

I don't know about Pennsylvania, but here in Florida a single white line
does not legally prevent crossing. But even if it did, we don't map a double
yellow as a median.


*You* don't map a double yellow (I assume you mean a double double
yellow) as a median.


No, I mean a double yellow. As in do not pass.

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Re: [Talk-us] [OSM-talk] Check my junctions - looking for someone to review my plates of spaghetti

2012-01-24 Thread Anthony
On Mon, Jan 23, 2012 at 11:20 PM, Nathan Edgars II nerou...@gmail.com wrote:
 On 1/23/2012 9:52 PM, dies38...@mypacks.net wrote:
 Yuck. A separate way should not be used for a turn lane (unless that lane is
 separated by barriers or maybe a wide striped-off area).
 Corollary: a separated right-turn lane begins and ends approximately where
 the traffic island begins and ends, not where the separate lane begins and
 ends.

Better fix this:

http://www.openstreetmap.org/?lat=27.987056lon=-82.5464zoom=18layers=M

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Re: [Talk-us] [OSM-talk] Check my junctions - looking for someone to review my plates of spaghetti

2012-01-24 Thread Nathan Edgars II

On 1/24/2012 8:45 AM, Anthony wrote:

On Mon, Jan 23, 2012 at 11:20 PM, Nathan Edgars IInerou...@gmail.com  wrote:

On 1/23/2012 9:52 PM, dies38...@mypacks.net wrote:
Yuck. A separate way should not be used for a turn lane (unless that lane is
separated by barriers or maybe a wide striped-off area).
Corollary: a separated right-turn lane begins and ends approximately where
the traffic island begins and ends, not where the separate lane begins and
ends.


Better fix this:

http://www.openstreetmap.org/?lat=27.987056lon=-82.5464zoom=18layers=M


Yawn.

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Re: [Talk-us] [OSM-talk] Check my junctions - looking for someone to review my plates of spaghetti -- responding to feedback

2012-01-24 Thread Anthony
On Tue, Jan 24, 2012 at 8:45 AM, Nathan Edgars II nerou...@gmail.com wrote:
 On 1/24/2012 8:33 AM, Anthony wrote:

 On Tue, Jan 24, 2012 at 7:31 AM, Nathan Edgars IInerou...@gmail.com
  wrote:

 I don't know about Pennsylvania, but here in Florida a single white line
 does not legally prevent crossing. But even if it did, we don't map a
 double
 yellow as a median.


 *You* don't map a double yellow (I assume you mean a double double
 yellow) as a median.

 No, I mean a double yellow. As in do not pass.

That doesn't legally prevent crossing either.

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Re: [Talk-us] [OSM-talk] Check my junctions - looking for someone to review my plates of spaghetti -- responding to feedback

2012-01-24 Thread Nathan Edgars II

On 1/24/2012 9:20 AM, Anthony wrote:

On Tue, Jan 24, 2012 at 8:45 AM, Nathan Edgars IInerou...@gmail.com  wrote:

On 1/24/2012 8:33 AM, Anthony wrote:


On Tue, Jan 24, 2012 at 7:31 AM, Nathan Edgars IInerou...@gmail.com
  wrote:


I don't know about Pennsylvania, but here in Florida a single white line
does not legally prevent crossing. But even if it did, we don't map a
double
yellow as a median.



*You* don't map a double yellow (I assume you mean a double double
yellow) as a median.


No, I mean a double yellow. As in do not pass.


That doesn't legally prevent crossing either.

It does if there are no intersections nearby. (Any other exceptions, 
such as passing an obstruction, would also apply to crossing a double 
white.)


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Re: [Talk-us] [OSM-talk] Check my junctions - looking for someone to review my plates of spaghetti -- responding to feedback

2012-01-24 Thread Paul Johnson
On Tue, Jan 24, 2012 at 6:31 AM, Nathan Edgars II nerou...@gmail.comwrote:

 On 1/24/2012 9:20 AM, Anthony wrote:

 On Tue, Jan 24, 2012 at 8:45 AM, Nathan Edgars IInerou...@gmail.com
  wrote:

 On 1/24/2012 8:33 AM, Anthony wrote:


 On Tue, Jan 24, 2012 at 7:31 AM, Nathan Edgars IInerou...@gmail.com
  wrote:


 I don't know about Pennsylvania, but here in Florida a single white
 line
 does not legally prevent crossing. But even if it did, we don't map a
 double
 yellow as a median.



 *You* don't map a double yellow (I assume you mean a double double
 yellow) as a median.

  No, I mean a double yellow. As in do not pass.


 That doesn't legally prevent crossing either.

  It does if there are no intersections nearby. (Any other exceptions,
 such as passing an obstruction, would also apply to crossing a double
 white.)


Florida's driver's manual says that crossing any double-white line is
prohibited.  You're confusing double white with single white.
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Re: [Talk-us] [OSM-talk] Check my junctions - looking for someone to review my plates of spaghetti -- responding to feedback

2012-01-24 Thread Anthony
On Tue, Jan 24, 2012 at 10:32 AM, Nathan Edgars II nerou...@gmail.com wrote:
 On 1/24/2012 10:24 AM, Paul Johnson wrote:

 Florida's driver's manual says that crossing any double-white line is
 prohibited.  You're confusing double white with single white.


 No, I'm not. And I agree with Mikel that this sort of reply is unproductive.

The fact that double yellow means crossing the centerline markings
for passing is prohibited and not crossing the centerline markings
is prohibited is quite significant.

You can, if it is safe and not otherwise prohibited, make a left turn
across a double yellow.  You can, if it is safe and not otherwise
prohibited, make a U-turn across a double yellow.

The only sense in which a double yellow prevents crossing if there
are no intersections nearby, is if any place where someone might turn
is called an intersection.

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Re: [Talk-us] [OSM-talk] Check my junctions - looking for someone to review my plates of spaghetti

2012-01-23 Thread Apollinaris Schoell
+1

it's nowhere close to a standard to split lanes. It is just a plate of 
spaghetti. hard to edit and maintain for no good reason. If it where anywhere 
where I care I'd just revert that.




On Jan 23, 2012, at 8:20 PM, Nathan Edgars II wrote:

 On 1/23/2012 9:52 PM, dies38...@mypacks.net wrote:
 Over the past couple of months, I have armchair-mapped several highway 
 junctions in the United States which are commonly complex in that they 
 involve multiple turn restrictions, street name changes and pedestrian 
 crossing placements.
 
 I would like to have some critique from someone experienced in mapping such 
 junctions so that I ensure I am following current best practice and am not 
 just creating a bunch of plates of unpalatable spaghetti.
 
 Two recent junctions are found in the following permalink views
 * http://www.openstreetmap.org/?lat=40.095879lon=-75.296179zoom=18layers=M
 * http://www.openstreetmap.org/?lat=39.128273lon=-77.237731zoom=18layers=M
 
 Yuck. A separate way should not be used for a turn lane (unless that lane is 
 separated by barriers or maybe a wide striped-off area).
 Corollary: a separated right-turn lane begins and ends approximately where 
 the traffic island begins and ends, not where the separate lane begins and 
 ends.
 
 Turn restrictions are not for identifying which lane goes where. They are for 
 restrictions on turning (e.g. if no left turn is allowed, you use a 
 no_left_turn restriction). Thus neither example needs any restrictions, since 
 you can turn in any direction from any approach. (Some mappers like to use 
 what are, frankly, completely redundant restrictions that force you to do 
 what any router will have you do anyway, such as no right turn at the 
 intersection if there's an island-separated right turn lane.)
 
 The second one is a simple crossing of two divided roads, found all over the 
 place (e.g. 
 http://www.openstreetmap.org/?lat=28.38582lon=-81.506134zoom=18layers=M - 
 note if you check against the aerial that the west-to-south right turn has 
 recently received an island).
 
 Of course the above is just my opinion, strongly influenced by what I have 
 seen as standard practice all over the country.
 
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