[OSM-talk] sidewalks

[Martin Koppenhoefer]

2009/8/8 Lester Caine <lester at lsces.co.uk>:
> YES there is a problem with 'can you cross the road', but that is something
> that we simply do not YET have the information to map anyway.
> I do not like the current way relations are implemented, but a link of some
> sort combining two footways and a vehicleway into one 'route' does seem the
> correct way forward, and when you add a dual carriageway situation - and I'm
> thinking of ones where there is a central barrier/fence - then the correct
> walkways would link to the correct lane of the dual carriageway, and the
> pedestrian crossings would then provide the CORRECT cross links?

yes, this would also provide the possibility to map different lanes
explicitly, as the may vary in width, surface, maxspeed, etc., and you
can map the small lanes on crossings (if you want to turn).

> Giving a practical example of where currently pedestrian routing can't be
> carried out ..
> http://www.openstreetmap.org/?lat=51.52986&lon=-0.44605&zoom=17&layers=B000FTF
> ( I lived in Hewens Road many years ago so know that area )
> There is a fence down the middle of the dual carriage way ( the Uxbridge Road
> ), and a number of pedestrian crossing links which are the safe way across. In
> micromapping terms, there are several 'sidewalks', the safe ones are on the
> north side of the white 'service road' along the side of the dual carriageway,
> and there are actually similar routes missing from the south side of the road.
> The 'sidewalks' between the various sections of the road - while usable - are
> in some areas also fenced like the middle of the dual carriageway to prevent
> people being pushed into the roadway.

couldn't you just map the fences and crossings? IMHO the pedestrian
pavements would clearly have to be mapped separately when divided from
the road by a fence (and they should be mapped separately where there
is no fence according to current model).

cheers,
Martin