[OSM-talk] Highway=trunk : harmonization between countries ?

Martin Koppenhoefer dieterdreist at gmail.com
Wed Aug 23 01:38:35 UTC 2017



sent from a phone

> On 23. Aug 2017, at 01:20, Greg Troxel <gdt at lexort.com> wrote:
> 
> maxspeed:practical should be a representative speed that's valid most of
> the time.
> 
>> maxspeed:practical should not have any values above the legal speed
>> limit.. and if it had routers should ignore such values anyway, at 
>> least thats what I would expect from navigation software.
>> Many years ago something like this was encouraged in the ancient 
>> proposal but it is no longer in the description.. if there is any 
>> remaining doubt I would explicitly state it in the wiki.
> 
> Show Quoted Content
>> maxspeed:practical should not have any values above the legal speed
>> limit.. and if it had routers should ignore such values anyway, at 
>> least thats what I would expect from navigation software.
>> Many years ago something like this was encouraged in the ancient 
>> proposal but it is no longer in the description.. if there is any 
>> remaining doubt I would explicitly state it in the wiki.
> 
> 
> This seems unreasonable.  Maybe where you are people follow speed limits
> (because they are enforced, or because speed limits are set by good
> engineering practice instead of arbitrarily)


yes, I see several situations where tagging additionally maxspeed:practical or typical would be interesting:

a) small/windy/unpaved roads without posted speed limits 
where the default speed limit is far from what you can reasonably and safely drive

b) situations where the posted speed limit is off the actual context, so that nobody respects it and the police doesn't enforce it

c) situations where there's a reason for a specific speed limit but still nobody respects it and the police doesn't enforce it.
Around here, on a big arterial road with 2+3+3+2 lanes (10), some months ago the city posted 30kph signs on all lanes and directions (before 50 but people went and still go 70-100 on the central lanes), presumably to postpone maintenance work without risking to being held responsible in case of an accident.


cheers,
Martin 
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