Types of relation
=== Types of relation === These types of relation are relations that we have in wide use. See proposed relation types below.
Established relations | |||||
---|---|---|---|---|---|
Type | Status | Members | Comment | Statistic | Photo |
multipolygon | de facto | ( ) | For areas where the outline consists of multiple ways, or that have holes; also used for boundaries. | ||
route | de facto | Like bus routes, cycle routes and numbered highways | |||
route_master | approved | route_master contains (parallel, opposite, variant, …) routes only; heavily used to group route variants in public transport. | |||
restriction | de facto | Any kind of turn restriction. | |||
boundary | de facto | Political, administrative and similar boundaries not always observable on the ground. Defined in similar manner as multipolygons. | |||
public_transport | approved | Part of the OSM public transport scheme. Mainly used by public_transport=stop_area. | |||
destination_sign | approved | Destination signs at or before intersections. | |||
waterway | approved | Relation to group elements of a waterway=*. | |||
enforcement | approved | Traffic enforcement devices; speed cameras, redlight cameras, weight checks, … | |||
connectivity | approved | Indicates how the lanes in the "from" member connect to those in the "to" member. | |||
Uncommon relations | |||||
Type | Status | Members | Comment | Statistic | Photo |
associatedStreet | controversial | House numbers related to a street. See Karlsruhe scheme proposal. Banned by community in a few countries. | |||
superroute | controversial | Groups together a string of routes. Superroute contains (concatenable) routes only. Its usefulness is disputed. | |||
site | in use | Groups elements of a "site" with node members, instead of using a multipolygon. See Relations/Proposed/Site | |||
network | in use | Relations that describe networks with their members being the members of this network. | |||
building | in use | Sometimes used to group elements that form a building in simple 3D modelling, but not usually required. | |||
multilinestring | in use | A discontiguous series of unclosed ways that semantically represents a single physical object. | |||
street | proposed | Bind all parts of a street together and everything else that belongs to it. See Relations/Proposed/Street | |||
bridge | proposed | Groups together all elements of one bridge. See Relations/Proposed/Bridges and Tunnels | |||
tunnel | proposed | Groups together all elements of one tunnel. See Relations/Proposed/Bridges and Tunnels | |||
user defined | proposed | All commonly used values according to Taginfo | Taginfo |
Proposed uses of relations
abandoned and obsoleted propositions not included
Junctions, intersections, grade separated crossings, and embankments
- Relations/Proposed/Bridges and Tunnels
- grouping all ways using a common bridge or tunnel
- Relations/Proposed/Junctions
- all the ways that make up a junction (such as a motorway intersection)
- Relations/Proposed/Turn hints
- Hints for whether a turn is a slight left, sharp left, fork, etc.
- Relations/Proposed/turn lanes
- which turns are allowed from a given lane
Area hierarchies and other relations for areas
- Relations/Proposed/Area
- to define areas between ways and lanes (linear crossover), virtual and physical dividers and crossover-possibilities, etc.
- Relations/Proposed/Label
- Manually placed labels or icons in areas
- Relations/Proposed/Level
- For floors in 3D-Objects (Subway stations, buildings, etc.).
- Relations/Proposed/Sled
- for grouping together all relevant items of a sled run.
Addressing
- Relations/Proposed/Cluster
- for grouping features with a collective name or address etc.
- Karlsruhe Schema
- Relations/Proposed/Postal Addresses
- Relations/Proposed/Street
- for grouping ways into complete streets, as well as associating other elements with it
Others
- Relations/Proposed/Defaults
- defines a set of default values (speed limits, oneways, access) for a country, a state
- Relations/Proposed/Provides feature
- to associate an object such as a restaurant, hotel or museum with one or more map features such as addresses or entrances.
- Proposed_features/Group_Relation
- a relation to create groups of objects (e.g. when they have a common name as group) without requiring additional tags (they are defined through their members).
- Relations/Proposed/Node
- a relation to have several node objects at the same location without adding actual geometry objects (e.g. for things attached to a pole, antennas on a mast, etc.)
This article is issued from Openstreetmap. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.