Re: [Talk-us] Typical maxweight signs in USA? (editor developmnent question)

[Mateusz Konieczny]

25 Jun 2019, 17:47 by pe...@dobratz.us:

> Thanks for trying to standardize on this.  I've seen a few of these maximum 
> weight signs and was unsure of how to tag.
>
> From what I've seen in the United States, I've seen maximum weights listed as 
> both lbs (pounds) and tons (where 1 ton = 2000 pounds).
>
> In Portland, Oregon, I've recently come across the following following text 
> on signs:
>
> WEIGHT
> RESTRICTED
> BRIDGE
> SINGLE AXLE TRUCKS
> 50,000 LBS MAX
> COMBINATION TRUCKS
> 80,000 LBS MAX
>
maxweight:hgv_articulated=8 lbs (?)
 = 5 lbs

> WEIGHT LIMIT REDUCED
> ANY SINGLE AXLE 20,000 LBS
> ANY TANDEM AXLE 34,000 LBS
> ANY GROSS WEIGHT 105,500 LBS
> LEGAL AXLE LOADS ONLY
>
maxweightrating=8 lbs
maxaxleload=2 lbs
but how to express tandem axle part?

I hunted down example image and uploaded to
https://commons.wikimedia.org/wiki/File:Trb2014_pooledfund_update_fig03.jpg 

https://wiki.openstreetmap.org/wiki/File:US_weight_limit_sign_%3D_single_axle,_tandem_axle,_gross_weight.png
 


and added as an example at
https://wiki.openstreetmap.org/wiki/Key:maxweightrating#maxweightrating_sign 

and
https://wiki.openstreetmap.org/wiki/Key:maxaxleload#Examples

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Re: [Talk-us] Typical maxweight signs in USA? (editor developmnent question)

[Mark Wagner]

On Tue, 25 Jun 2019 08:47:39 -0700
Peter Dobratz  wrote:

> 
> Reading this page, I see the potential ambiguity extends deeper than I
> realized (short ton, metric ton, long ton)
> https://en.wikipedia.org/wiki/Tonne
> 

"Ton" in the United States is *always* the "short ton" of 2000 pounds.

-- 
Mark

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Re: [Talk-us] Typical maxweight signs in USA? (editor developmnent question)

[Mateusz Konieczny]

25 Jun 2019, 17:47 by pe...@dobratz.us:

> Reading this page, I see the potential ambiguity extends deeper than I 
> realized (short ton, metric ton, long ton)
> https://en.wikipedia.org/wiki/Tonne 
>
AFAIK all cases of "t" in USA on max weight signs means "short ton".

Taggable by adding "st" unit or by converting to pounds, and adding "lbs" unit.
First seems to be superior as puts lower burden on mappers and it allows to 
directly map what is signed.
See https://wiki.openstreetmap.org/wiki/Key:maxweight#Usage

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Re: [Talk-us] Typical maxweight signs in USA? (editor developmnent question)

[Bill Ricker]

The silhouettes version is moderately frequent with smaller older bridges,
where spreading the weight out makes a difference. Pretty sure I've seen
the California variant or similar on the east coast / New England too.

On Tue, Jun 25, 2019, 11:52 AM Peter Dobratz  wrote:

> Thanks for trying to standardize on this.  I've seen a few of these
> maximum weight signs and was unsure of how to tag.
>
> From what I've seen in the United States, I've seen maximum weights listed
> as both lbs (pounds) and tons (where 1 ton = 2000 pounds).
>
> In Portland, Oregon, I've recently come across the following following
> text on signs:
>
> WEIGHT
> RESTRICTED
> BRIDGE
> SINGLE AXLE TRUCKS
> 50,000 LBS MAX
> COMBINATION TRUCKS
> 80,000 LBS MAX
>
> WEIGHT LIMIT REDUCED
> ANY SINGLE AXLE 20,000 LBS
> ANY TANDEM AXLE 34,000 LBS
> ANY GROSS WEIGHT 105,500 LBS
> LEGAL AXLE LOADS ONLY
>
> WEIGHT
> LIMIT
> 6
> TONS
>
> Reading this page, I see the potential ambiguity extends deeper than I
> realized (short ton, metric ton, long ton)
> https://en.wikipedia.org/wiki/Tonne
>
> Peter
>
>
>
> On Tue, Jun 25, 2019 at 3:35 AM Mateusz Konieczny 
> wrote:
>
>> How often weight limit signs other than plain
>> "Weight limit X tons"
>> https://wiki.openstreetmap.org/wiki/File:MUTCD_R12-1.svg
>>
>> and
>>
>> R12-5 https://wiki.openstreetmap.org/wiki/File:MUTCD_R12-5.svg
>> appear?
>>
>> Some of them are listed at
>> https://wiki.openstreetmap.org/wiki/Key:maxweight#United_States
>> but I am unsure is it case of something actually popular or rare
>> curiosity?
>>
>> -
>>
>> I am asking as I work on extending StreetComplete by adding max weight
>> quest for bridges
>> and I want to support also USA-style weight limits.
>>
>> 
>>
>> PS StreetComplete is a bit different editor, available as an Android
>> application - it allows to make
>> a very limited set of edits, but all can be done by answering simple
>> questions with no OSM specific
>> knowledge necessary.
>>
>> PPS In case that somebody used StreetComplete and noticed some stupid and
>> preventable behavior,
>> reports at https://github.com/westnordost/StreetComplete/issues are
>> welcomed (or
>> within this thread if someone is unable/unwilling to make a Github
>> account)
>>
>>
>>
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>>
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Re: [Talk-us] Typical maxweight signs in USA? (editor developmnent question)

[Peter Dobratz]

Thanks for trying to standardize on this.  I've seen a few of these maximum
weight signs and was unsure of how to tag.

>From what I've seen in the United States, I've seen maximum weights listed
as both lbs (pounds) and tons (where 1 ton = 2000 pounds).

In Portland, Oregon, I've recently come across the following following text
on signs:

WEIGHT
RESTRICTED
BRIDGE
SINGLE AXLE TRUCKS
50,000 LBS MAX
COMBINATION TRUCKS
80,000 LBS MAX

WEIGHT LIMIT REDUCED
ANY SINGLE AXLE 20,000 LBS
ANY TANDEM AXLE 34,000 LBS
ANY GROSS WEIGHT 105,500 LBS
LEGAL AXLE LOADS ONLY

WEIGHT
LIMIT
6
TONS

Reading this page, I see the potential ambiguity extends deeper than I
realized (short ton, metric ton, long ton)
https://en.wikipedia.org/wiki/Tonne

Peter



On Tue, Jun 25, 2019 at 3:35 AM Mateusz Konieczny 
wrote:

> How often weight limit signs other than plain
> "Weight limit X tons"
> https://wiki.openstreetmap.org/wiki/File:MUTCD_R12-1.svg
>
> and
>
> R12-5 https://wiki.openstreetmap.org/wiki/File:MUTCD_R12-5.svg
> appear?
>
> Some of them are listed at
> https://wiki.openstreetmap.org/wiki/Key:maxweight#United_States
> but I am unsure is it case of something actually popular or rare curiosity?
>
> -
>
> I am asking as I work on extending StreetComplete by adding max weight
> quest for bridges
> and I want to support also USA-style weight limits.
>
> 
>
> PS StreetComplete is a bit different editor, available as an Android
> application - it allows to make
> a very limited set of edits, but all can be done by answering simple
> questions with no OSM specific
> knowledge necessary.
>
> PPS In case that somebody used StreetComplete and noticed some stupid and
> preventable behavior,
> reports at https://github.com/westnordost/StreetComplete/issues are
> welcomed (or
> within this thread if someone is unable/unwilling to make a Github account)
>
>
>
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> Talk-us mailing list
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>
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[Talk-us] Typical maxweight signs in USA? (editor developmnent question)

[Mateusz Konieczny]

How often weight limit signs other than plain 
"Weight limit X tons" https://wiki.openstreetmap.org/wiki/File:MUTCD_R12-1.svg 


and

R12-5 https://wiki.openstreetmap.org/wiki/File:MUTCD_R12-5.svg 

appear?

Some of them are listed at 
https://wiki.openstreetmap.org/wiki/Key:maxweight#United_States 

but I am unsure is it case of something actually popular or rare curiosity?

-

I am asking as I work on extending StreetComplete by adding max weight quest 
for bridges 
and I want to support also USA-style weight limits.


PS StreetComplete is a bit different editor, available as an Android 
application - it allows to make 
a very limited set of edits, but all can be done by answering simple questions 
with no OSM specific
knowledge necessary.

PPS In case that somebody used StreetComplete and noticed some stupid and 
preventable behavior,
reports at https://github.com/westnordost/StreetComplete/issues 
 are welcomed (or
within this thread if someone is unable/unwilling to make a Github account)



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[Talk-us] maxweight sign R12-5 - how to tag it? Is this correct? (editor development question)

[Mateusz Konieczny]

There is a bit tricky sign 
https://wiki.openstreetmap.org/wiki/File:MUTCD_R12-5.svg 


OSM Wiki at https://wiki.openstreetmap.org/wiki/Key:maxweight#Examples 
 proposes to use:
maxweight=8 st
maxweight:hgv_articulated=12 st
maxweight:hgv:conditional=16 st @ (trailer)

This seems reasonable to me, but I wanted to check is it correct.

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