Proposal:Detailed tactile paving
| detailed tactile paving | |
|---|---|
| Proposal status: | Draft (under way) |
| Proposed by: | Popball |
| Tagging: | tactile_paving=* |
| Applies to: | |
| Definition: | More detailed tactile pavement tagging |
| Statistics: |
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| Draft started: | 2022-10-13 |
Proposal
This proposal introduces a few new tags in order to more accurately map tactile paving.
Rationale
Currently, the schema for tagging tactile paving in OSM is quite primitive. For example, it cannot differentiate between tactile paving meant to guide the user versus tactile paving meant to warn the user. The current schema does also not cope well with incomplete tactile paving.
Tagging
Types of tactile paving
- tactile_paving=guide Linear tactile paving designed to be followed
- tactile_paving=warning Tactile paving designed to alert the user. This can be to warn the user of a hazard (a tram platform, a road crossing, etc.) or can inform the user of a choice (e.g. tactile pavement branching into a different direction). In the case that the tactile paving is to warn the user about a hazard, this can be specified with the already established hazard=* scheme.
- tactile_paving=orient Tactile pavement designed to orient the user in a specific direction, but does not guide the user. This is used sometimes at curbs before pedestrian crossings.
- tactile_paving=segregation Tactile pavement used with a segregated (segregated=yes) way to indicate which side the pedestrian is to walk on and to warn about cycle traffic.
Contrasted paving
Due to the new keys, it is neccessary to use the new key tactile_paving:contrasted=yes/no to capture whether the tactile paving has high contrast (rather than tactile_paving=contrasted). In addition, the colour can be specified with tactile_paving:colour=*.
Tactile patterns
One can specify the specific design of the pattern using tactile_paving:pattern=*.
| Key | Value | Diagram | Description | Example |
|---|---|---|---|---|
| tactile_paving:pattern | ribbed | Parallel 'ribs' typically employed at guide tactile pavement. |  | |
| tactile_paving:pattern | blister | Circular umps arranged in a grid pattern. Perhaps the most common warning surface. |  | |
| tactile_paving:pattern | offset_blister | Similar to blister, but every other row is offset by half. |  | |
| tactile_paving:pattern | lozenge | One or more rows of obround (oval) shaped bumps arranged in a grid pattern. |  | |
| tactile_paving:pattern | corduroy | Several small bars arranged in a line. These are distinctly smaller than the ridges of ribbed tactile paving and is often put transversely the direction of travel. |  |
Separately mapped tactile paving
For more complex situations and to better capture geometry, it may be useful to map the tactile pavement separate from the feature itself. To tag that the tactile paving is captured separately, tag the main feature with tactile_paving=separate. An example of this would be a train platform, which may have a multiple tactile_paving=warning ways in front of the platforms or stairways as well as multiple tactile_paving=guide ways to guide the user through the train station.
It may also be useful at pedestrian crossings where the tactile paving is tagged on the kerbs.
Examples
| Example | Tagging |
|---|---|
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A node along the cycleway at the location of the tactile paving band tagged with |
Rendering
Tactile paving is not rendered in carto, but this information could be especially useful for any maps aimed at the blind, for example the projects listed at OSM for the blind.
Features/Pages affected
External discussions
Comments
Please comment on the discussion page. I would esspecially appreciate any input from blind/partially sighted people as they would know this subject the best. In addition, feel free to let me know if there is anything I can do to make this proposal page more accessable.