[OSM-talk] [RFC] Deprecating the use of Tag:highway=stop in favour of Key:stop

[Craig Wallace]

On 23/08/2009 18:09, David Paleino wrote:
> On Sun, 23 Aug 2009 17:48:58 +0100, Craig Wallace wrote:
>
>    
>> Why is it necessary to relate the highway=stop to the junction node?
>> Isn't it obvious that if a highway=stop is within a few metres of a
>> junction, then its part of the same junction. It shouldn't affect
>> routing software etc anyway.
> Well, one thing I could think of is "short" roads ~10m long or so. I've seen
> quite of these, but "fortunately" none of them had a stop sign -- with the
> current GPS accuracy (3m for my unit, at least nominally) it would've been a
> problem taking a waypoint for a stop sign placed there.
>
> Am I totally wrong/biased? :-)
>
> (just out of curiosity: I've also seen roads 4-5m long)
>    
I think for things like this, the relative position is more important 
than the absolute accuracy.
eg its more useful to know the stop sign is 5m away from the centre of 
the junction in this direction, than it is to know the its exact 
latitude and longitude.

So instead of just marking a waypoint, you can measure/estimate the 
relative distances on the ground, and note them down.
Or what I usually do is just take a photo (and geotag it), then I can 
estimate the distances from that later.


>> And it doesn't have to be very precise. Its easy to estimate the width
>> of a road, and how far away from the road edge the stop line is.
>>      
> If we were to use highway=stop, it should be *on* the way (part of it), not on
> one side.
>    
Sorry, I meant how far away from the edge of the 'other' road, ie the 
one going across the junction.