FR:Key:kerb
 kerb
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Used to indicate height and thus accessibility of a kerb.  
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| Groupe: Sidewalks |
| Utilisé pour ces éléments |
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| Combinaisons utiles |
Statut : utilisé
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| Outils pour cet attribut |
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| Wikidata |
| Q37442 |
Une bordure est la délimitation entre une route et un 
trottoir. Les emplacements des bordures sont importants pour les personnes se déplaçant à pied, à vélo et surtout pour les personnes à mobilité réduite (par exemple en fauteuil roulant), car elles constituent des transitions entre des hauteurs et des revêtements qui varient.
La clé est kerb=*, à utiliser sur un nœud appartenant à highway=footway, highway=cycleway ou highway=path à l'endroit où est située la bordure (à la limite avec la route). Si la bordure est identique des deux côtés d'une intersection, il est possible d'ajouter le tag kerb=* au nœud highway=crossing, ce qui sacrifie en partie la précision au profit de la simplicité. Il convient d'utiliser kerb:left et kerb:right si la bordure est différente.
Taggage
Les valeurs que le tag peut prendre sont indiquées dans le tableau ci-dessous. Gardez à l'esprit que les hauteurs renseignées sont à titre purement indicatif, le choix d'une valeur particulière devrait uniquement dépendre de considérations fonctionnelles. En d'autres termes, il vaut mieux penser à l'accessibilité pour les fauteuils roulants et les vélos qu'à la hauteur spécifique de la bordure lors du choix de la valeur.
| Valeur | Hauteur habituelle | Usage habituel | Description | Exemple |
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| raised | >3 cm | Bus stops & older kerbs | Raised above the norm, sufficiently to prevent traversal by wheelchairs, as well as to impede bicycles. Typical at bus stops to provide at-level access on and off buses.
At least in the US, this is also the most common kerb at footway crossings before recent accessibility regulations came into existence. (Note: may be also tagged yes pending discussion.) Note that the primary feature of Kassel kerbs, used at bus stops, is contouring to alleviate tyre rubbing when buses stop (not having a raised level), which is not specifically mapped. When used on footway it implies wheelchair=no, and may be used to increase the cost of travelling over this kerb by bicycle. Aside from the general method, this can also be added to the highway=bus_stop node or platform node/way - in such case it would not imply wheelchair=no. |
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| lowered | ~3 cm | Crossings & driveways | Lowered kerbs are often found at crossing and driveways. They help ensure the crossing can be used by wheelchair users and allow access to drives. Implies wheelchair=yes.
Some names for objects that fall into this category include driveway apron, curb cut (U.S.), curb ramp, dropped kerb (UK), pram ramp, and kerb ramp (Australia). Use this as a replacement for sloped_curb=yes or both. |
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| flush | ~0 cm | Crossings & driveways | Similarly to lowered, except the level transition is unlikely to be apparent, to blind users, by tactile sensation. Implies wheelchair=yes.
It is important to map tactile paving at these locations. |
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| rolled | N/A | Residential streets | Rolled kerbs still provide a gutter for water while being traversable by large wheeled vehicles, such as cars and bicycles, but not wheelchairs. They are generally used in lightly trafficked areas, such as planned residential areas, being insufficient for commercial or industrial roads. Implies wheelchair=no.
Do not confuse with kerb=lowered, which are traversable by wheelchairs. |
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| N/A | Driveways | A typical curb for driveways traversable by vehicles and bicycles, but not wheelchairs, due to too high degrees. Implies wheelchair=no. | ||
| yes | Any | Some sort of kerb is present, but it can't or hasn't yet been determined whether it is raised, lowered, flush, etc. This may be useful when mapping via aerial imagery (prior to field survey) or if the exact type of kerb can't be recalled. Cautious routers could consider this to mean wheelchair=no, so whenever possible this value should not be used other than on a temporary basis. | ||
| no | N/A | No kerb is present. This may be useful to make it clear there is no kerb present if there used to be a kerb at this location. |
kerb:height=<hauteur><unité>
SI la hauteur exacte de la bordure est connue, elle peut également être indiquée en utilisant le tag kerb:height=*. Il faut alors indiquer l'unité utilisée dans le tag.
Exemples
| Type | Taggage |
|---|---|
| This shows a raised kerb at the tram stop, a lowered next to it at the crossing, and a regular one closest to the viewer. | |
| Red nodes are tagged with kerb=lowered, crossing ways are marked with highway=footway and footway=crossing, crossing nodes are tagged with highway=crossing and crossing=traffic_signals. | |
| Add to either the bus stop or the platform kerb=raised. It is assumed the kerb tag refers to the edge between the road and the platform. If you wish to explicitly map, tag the actually kerb as the way on the platform area. | |
| Use kerb=lowered on the nodes of the footway at the locations of the kerbs. Assuming both sides of the crossing are the same this could be added to the crossing node. | |
| Use kerb=flush and tactile_paving=yes on the nodes of the footway at the locations of the kerbs. Assuming both sides of the crossing are the same this could be added to the crossing node. |
Tags liés
Le noeud kerb=* peut aussi être taggé avec tactile_paving=* pour aider les déficients visuels, ce qui est particulièrement important sur les noeuds kerb=flush. Voir aussi barrier=kerb.
Discussions en cours
- kerb:height - unité par défaut
- Utilisation du tag kerb sur des lignes
- Ajouter une valeur "normal" et utiliser "raised" uniquement pour les bordures de type plateforme de bus
- Documenter kerb:left et kerb:right pour les bordures asymétriques taggées à un noeud de croisement
- Utilisation comme sous-clé pour barrier=kerb.
Voir aussi
- Steps features
- Barrier
- Wheelchair
- Tactile paving
- Proposed features/Traffic island
- Proposed features/sloped curb
- Proposed features/right left
- Relations/Proposed/Area
Liens externes
- Wikipedia articles on kerb, and curb cut
- FHWA: Designing Sidewalks and Trails for Access, Chapter 7. Curb Ramps (en) - Par la "US Federal Highways Administration", tout ce que vous avez toujours voulu savoir sur les rampes de trottoirs. D'autres chapitres de ce guide pourraient aussi s'avérer utiles.