[OSM-talk] About large streets

[Joerg Ostertag]

On Wednesday 22 February 2006 18:24, Andy Robinson wrote:
> For any future navigational use, 

I think for navigational use defining a direction to every street would make 
sense. If you'd primarily only insert streets in the direction the track was 
inserted you'll be sure the street can be driven in the direction inserted. 
This way you'd have to add two tracks for all normal 2-way streets, but you 
could also add connection points (for routing) to the real intersection of 
two streets. For example on Autobahn you sometimes only have an exit in one 
direction. If you only have one street the routing would always fail on these 
streets. 
If i take another close look at Autobahns and routing i see that even if the 
exit in both directions is centered at almost the same point you need to 
announce these exits about 1Km apart from each other.
And the third benefit would be that you wouldn't really have to think about  
"one way streets".

If we want to use our Data for navigation and routing we might also have to 
add intersection points to our Data.

> and for how a final map might look, it is 
> best to have even these very wide undivided highways as a single line
> running down the centre. It only looks odd at the moment because all the
> clients are drawing streets at a common width.

I think it might be a good Idea to have additional info on every street on how 
many lanes there are. This way the client can draw the streets in different 
width.

-

Joerg