[Accessibility] How to map parts of tactile paving and other feature?

[THUROW, ANNETTE]

Hello list, 
hello Annemieke,

welcome to mapping for the blind!

Annemieke:
>[..] because I live in an small city with a
> institute for the blind (especially education to blind children).

This is a node or a building outline with the tag school=blind.

Annemieke:
[..] I looked at German examples, but most of them are bus-stop
> platforms or additions to traffic-light crossings. 

Yes, they are easiest to map...

> I can not find
> examples of tactile paving on foot-ways along roads (only a few where
> the foot-way is completely separated in a park).

True, there is not much yet.

Annemieke:
[..]
> Should I only mark the nodes of the crossings? 

No, not only. Set a note at a pedestrian crossing on each side of the road if there is an area on the ground that is not for guiding you along a way but for gathering attention that there is something (here the crossing).
(DE: Aufmerksamkeitsfeld)

Annemieke:
> And what if a section
> of the path is mark apart from crossings (example: there is place
> where cars are allowed to park on the foot-way, which is extra width
> at that point. There is tactile paving on the part of this foot-path
> to lead the blind around the parked cars, but there is no crossing at
> the beginning nor at the end of this part)?

Map the footway as highway=footway next to the street.
The :left :right system for mapping does not work if there are additional attributes to the footway.
Add tactile_paving=yes to the footway where a guiding line is on the ground.

> How should I make clear that the tactile paving is only on one side of
> the road, if the foot-ways are on both side?

It works fine if the footways are mapped seperately.

> Or should I draw all these foot-ways, even if they are directly along
> roads, so I can mark the exact sections with tactile paving?

Yes, there is no easier or better way to do it.

> I think
> this last option is the most clean option, but takes a lot of work,
> and this is not how others have done it so far....

Mapping for the blind is new at all... the footways are needed some day anyways.
The mobile navigation software for the blind will not be able to guess what is meant if it is not mapped in detail.
Yes, mapping for the blind is micromapping... :-)
 
If there is a pedestrian area, and there is a guiding line across, map this as an additional way with tactile_paving=yes, but do not add highway=footway in this case, as it is not relevant for other pedestrians.

Regards
Lulu-Ann