Railway layer - Lemap1/geoclimate GitHub Wiki

The Railway layer represents any kind of runways for wheeled equipment. Geometries must be LINESTRING or MULTILINESTRING.

Name	Type	Constraints	Definition
the_geom	LINESTRING or MULTILINESTRING	X Y dimensions	Geometry
id_railway	INTEGER	Primary Key	Unique Identifier
id_source	VARCHAR	not null	Identifier of the feature from the input datasource
type	VARCHAR	not null; in type list	Type of rail
zindex	INTEGER	not null; >= -4; <= 4	Defines the position with respect to the ground. 0 indicates that the object is on the ground. 1 to 4 indicates that the object is above the ground surface. -4 to -1 value indicates that the object is underground.
crossing	VARCHAR	bridge or null	Indicates whether the rail is located on a bridge or not (null). A bridge is defined as an artificial construction that spans features such as roads, railways, waterways or valleys and carries a road, railway or other feature
usage	VARCHAR	null ; in usage list	Indicates the usage of the rail way
width	float	not null	Width of the rail way (expressed in meters). A default value is used corresponding to the standard gauge (1.435) plus 1 meter for balasting.

type column values

List of all possible values for the type values.

Term	Definition	Source
highspeed	Railway track for highspeed rail.	1
rail	Railway track for full sized passenger or freight trains in the standard gauge for the country or state.	2
service track	Railway track mainly used for sorting or temporary parking of freight trains.	3
disused	A section of railway which is no longer used but where the track and infrastructure remain in place.	4
funicular	Cable railway in which a cable attached to a pair of tram-like vehicles on rails moves them up and down a steep slope, the ascending and descending vehicles counterbalancing each other.	5
subway	Rails used for city public transport that are always completely separated from other traffic, often underground	6
tram	Railway track which is mainly or exclusively used for trams, or where tram tracks are laid within a normal road open to all traffic, often called street running.	7

usage column values

The list of all possible values for the usage column is closed from OSM definition (https://wiki.openstreetmap.org/wiki/Key:usage). Supported values are : main, branch, industrial, military, tourism, scientific, test