[OSM-talk] Left and Right - a proposal

[robin paulson]

Gervase Markham wrote:
> What do people think?

i think it's fantastic - it addresses most of the problems that have 
come up the last few days on this subject

i'm sure in the future we'll find some edge cases that don't fit, but i 
think this deserves at least some experimenting to see how it works in 
reality. are there dev copies of the main map where this could be trialled?

i recall earlier this week someone made a comment about not allowing 
ways to be reversed. i think that would be tidier than expecting the 
editor to change all the tags along a way (imagine all the bus stops, 
phone boxes, post boxes, etc. on even a 5km road in a city) if it were 
to be reversed. as he suggested, the 'oneway=-1' can overcome the 
problem of the way pointing the wrong direction

as an aside, we could use this to start rendering pavements as well (say 
zoom 15 - 17 only). by default, it draws them in at some offset, 
dependent on the road type/width. if there's a 'left:pavement=none', 
etc. then it would miss it