Re: [Tagging] maxweight=* specified for different axle counts

2018-06-14 Thread osm.tagging
Based on the documentation for conditional tags, I would say:

 

maxweight=10 st

maxweight:conditional=17 st @ (axles >= 4), 16 st @ (axles = 3)

 

it’s best to put the lowest limit as default into the non-conditional tag, so 
that if a software doesn’t or can’t parse the conditional tag it’s not going to 
exceed the limit, no matter what the situation.

 

From: David Wang  
Sent: Thursday, 14 June 2018 07:41
To: tagging@openstreetmap.org
Subject: [Tagging] maxweight=* specified for different axle counts

 

What is the best way to specify the maximum weight when a sign specifies 
different weights for different axle counts?

 

The situation in question is here:

https://www.mapillary.com/map/im/VMM_wbgzcm1jFm_APKhQww

 

For those who cannot see the image, the sign says

: WEIGHT LIMIT

: 2 axle - 10 tons

: 3 axle - 16 tons

: 4 axle + - 17 tons

(“tons” in this case means “short tons”, as it is in the US)

 

I went through the Tagging list archives and found a thread from Dec 2015/Jan 
2016, with the subject “Specifying maxweight, when different weight limits are 
signed” (starting here: 
https://lists.openstreetmap.org/pipermail/tagging/2015-December/027931.html and 
here: 
https://lists.openstreetmap.org/pipermail/tagging/2016-January/027975.html)

 

My problem is that placing “maxweight=10 st” and “maxweight=17 st” are both not 
true to the information on the ground, plus info is lost. 

 

One solution proposed in the above thread is to find the weight borne per axle 
and then use the most restrictive weight, as in (17 st)/(4 axles)=4.25 st/axle, 
tagged as “maxaxleload=4.25 st”. Unfortunately, the last is 4+ axles, meaning 
that with multiple axles, the maximum load per axle goes to zero, so this does 
not work. 

 

Another solution was to use the access keys as suffixes on the maxweight key, 
as in “maxweight:hgv” and “maxweight:bus”, to specify the maximum weight. 
However, I find this solution clunky. It also doesn’t address the fact that 
some vehicles can have different axle counts, for example an HGV can have 
anywhere from two to five axles. 

 

I feel this situation might need a new suffix at the very least 
(“maxweight:axles:#=*” ?), but it’s definitely up to comment.

 

Thanks,

David

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[Tagging] Street exits

2018-06-14 Thread Peter Elderson
In Nederland we have a growing number of  "exit constructions", where
traffic has to cross a section of sidewalk to join the larger road. There
is no traffic sign for this, it is indicated by the construction and lining
of the join section. "If it looks like a driveway exit, treat it like a
driveway exit" is the idea. Don't bother with signs, just use more sidewalk
pavement.

https://www.google.nl/maps/@51.9663779,4.6074315,3a,75y,14.43h,78.48t/data=!3m6!1e1!3m4!1s8uG7mHF9cw2n65XprKze0w!2e0!7i13312!8i6656


This has (legal and practical) implications for speed and right of way:
traffic coming from an exit construction has to give way to all sides, to
all traffic including pedestrians, and maxspeed = 15 Kmph.

Some mappers want to tag this so it could be rendered and routed taking
speed limit and right of way into account.

The easiest solution is to tag the end of the joining road (where traffic
crosses the sidewalk) with an exiting or new highway tag, defining it as a
section which can be crossed (and routed) but has to give way to all, and
limits speed.

Any thoughts on this?

-- 
Vr gr Peter Elderson
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Re: [Tagging] Street exits

2018-06-14 Thread Martin Koppenhoefer


sent from a phone

> On 15. Jun 2018, at 08:04, Peter Elderson  wrote:
> 
> "If it looks like a driveway exit, treat it like a driveway exit" is the 
> idea. Don't bother with signs, just use more sidewalk pavement. 


For me this piece of street does not look like a driveway, I would call it a 
residential street. In Germany it would probably be a living street.

Are there particular rules implied by the paving?

Cheers,
Martin 



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Re: [Tagging] Street exits

2018-06-14 Thread Graeme Fitzpatrick
Sorry if I've misunderstood Peter, but is there any difference between this
& a normal driveway?

Thanks

Graeme
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Re: [Tagging] Street exits

2018-06-14 Thread osm.tagging
If you follow the road in SV, you can see that it’s a normal road with it’s own 
name, and connections to other roads.

 

My first impulse was also “if it’s treated like a driveway, tag it as a 
driveway”, but it clearly isn’t one once you are actually in the road.

 

It’s only the part where it connected to the other road “like a driveway” 
instead of like a normal road.

 

From: Graeme Fitzpatrick  
Sent: Friday, 15 June 2018 16:18
To: Tag discussion, strategy and related tools 
Subject: Re: [Tagging] Street exits

 

Sorry if I've misunderstood Peter, but is there any difference between this & a 
normal driveway?




Thanks

 

Graeme

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Re: [Tagging] Street exits

2018-06-14 Thread Peter Elderson
The street is residential, but the exit is over a sidewalk, with a dropped
curb. That's the piece I'm talking about: not the street, just the exit.

Rules (legally) implied are that traffic can pass over this sidewalk, but
has to give way to all sides and all others including pedestrians. Speed is
limited to 15 Kmph (living_street rules).

2018-06-15 8:16 GMT+02:00 Martin Koppenhoefer :

>
>
> sent from a phone
>
> > On 15. Jun 2018, at 08:04, Peter Elderson  wrote:
> >
> > "If it looks like a driveway exit, treat it like a driveway exit" is the
> idea. Don't bother with signs, just use more sidewalk pavement.
>
>
> For me this piece of street does not look like a driveway, I would call it
> a residential street. In Germany it would probably be a living street.
>
> Are there particular rules implied by the paving?
>
> Cheers,
> Martin
>
>
>
> ___
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>



-- 
Vr gr Peter Elderson
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Re: [Tagging] Street exits

2018-06-14 Thread Peter Elderson
Driveway is to and from a private property, I think? The difference is that
this exit is from a public street with normal traffic. Routable.

2018-06-15 8:17 GMT+02:00 Graeme Fitzpatrick :

> Sorry if I've misunderstood Peter, but is there any difference between
> this & a normal driveway?
>
> Thanks
>
> Graeme
>
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>
>


-- 
Vr gr Peter Elderson
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Re: [Tagging] Street exits

2018-06-14 Thread osm.tagging
A quick search shows that it's probably not a "living street", as the concept 
does exist in the Netherlands, but does require explicit signs like in Germany:

https://nl.wikipedia.org/wiki/Woonerf

Also, in my experience "living streets" usually lack a clear kerb and 
distinction between road and sidewalk, which this street has if you follow it.

> -Original Message-
> From: Martin Koppenhoefer 
> Sent: Friday, 15 June 2018 16:17
> To: Tag discussion, strategy and related tools
> 
> Subject: Re: [Tagging] Street exits
> 
> 
> 
> sent from a phone
> 
> > On 15. Jun 2018, at 08:04, Peter Elderson 
> wrote:
> >
> > "If it looks like a driveway exit, treat it like a driveway exit"
> is the idea. Don't bother with signs, just use more sidewalk
> pavement.
> 
> 
> For me this piece of street does not look like a driveway, I would
> call it a residential street. In Germany it would probably be a
> living street.
> 
> Are there particular rules implied by the paving?
> 
> Cheers,
> Martin
> 
> 
> 
> ___
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Re: [Tagging] Street exits

2018-06-14 Thread Marc Gemis
Where is the maxspeed 15 km/h, only on the crossing with the sidewalk
? Then that is similar to traffic calming tables in Belgium, where the
max speed is also lower.

I would just map a point on the road with highway=crossing;
crossing="dutch_exit_construction_type". and perhaps a small segment
of the road with surface=paving_stones; maxspeed=15 and a
highway=give_way node next to the crossing node.
In Belgium you are supposed to stop at each highway=crossing and give
way to the pedestrians waiting to cross the street. So the give way to
pedestrians is somehow implied by the crossing.

m
On Fri, Jun 15, 2018 at 8:05 AM Peter Elderson  wrote:
>
> In Nederland we have a growing number of  "exit constructions", where traffic 
> has to cross a section of sidewalk to join the larger road. There is no 
> traffic sign for this, it is indicated by the construction and lining of the 
> join section. "If it looks like a driveway exit, treat it like a driveway 
> exit" is the idea. Don't bother with signs, just use more sidewalk pavement.
>
> https://www.google.nl/maps/@51.9663779,4.6074315,3a,75y,14.43h,78.48t/data=!3m6!1e1!3m4!1s8uG7mHF9cw2n65XprKze0w!2e0!7i13312!8i6656
>
>
> This has (legal and practical) implications for speed and right of way: 
> traffic coming from an exit construction has to give way to all sides, to all 
> traffic including pedestrians, and maxspeed = 15 Kmph.
>
> Some mappers want to tag this so it could be rendered and routed taking speed 
> limit and right of way into account.
>
> The easiest solution is to tag the end of the joining road (where traffic 
> crosses the sidewalk) with an exiting or new highway tag, defining it as a 
> section which can be crossed (and routed) but has to give way to all, and 
> limits speed.
>
> Any thoughts on this?
>
> --
> Vr gr Peter Elderson
> ___
> Tagging mailing list
> Tagging@openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging

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Re: [Tagging] Street exits

2018-06-14 Thread osm.tagging
From: Peter Elderson  
Sent: Friday, 15 June 2018 16:29
To: Tag discussion, strategy and related tools 
Subject: Re: [Tagging] Street exits

 

The street is residential, but the exit is over a sidewalk, with a dropped 
curb. That's the piece I'm talking about: not the street, just the exit.

 

Rules (legally) implied are that traffic can pass over this sidewalk, but has 
to give way to all sides and all others including pedestrians. Speed is limited 
to 15 Kmph (living_street rules).

 

 

Only for that part where it crosses the sidewalk, or for the whole street 
behind it?

 

As I’m normally mapping the kerb lines (way along the position of the kerb, 
with barrier=kerb and kerb=raised/lowered/rolled/flush) I would in this place 
have the highway crossing that kerb line, and would create an intersecting node 
(again tagged as barrier=kerb, kerb=lowered) (the same as when I’m mapping 
individual driveways, see: 
https://www.openstreetmap.org/edit#map=21/-27.21152/153.02620 ). But not 
everyone wants to map to this level of detail.

 

Maybe just a single barrier=kerb, kerb=lowered node on the highway to indicate 
that it has to cross the kerb?

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