# RailCLine

Line representing the estimated centre line of a rail.

<figure><img src="https://1897589978-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FcNpJpLP8RROUaWVQo5ea%2Fuploads%2FAYcOB62M3wVQQWtw3TVF%2Fimage.png?alt=media&#x26;token=58782b1a-40d7-4033-ae19-dd96c0352700" alt="UML diagram of the RailCLine Feature Type, listing its six attributes. The feature type and its attributes are described in detail in the FeatureType RailCLine table." width="314"><figcaption><p>UML diagram showing the RailCLine Feature Type in the GML supply</p></figcaption></figure>

## RailCLine attributes

### polyline

An ordered set of points forming a line feature.

* **Type:** GM\_Curve
* **Length:** N/A
* **Multiplicity:** \[1]

### featureID

A unique feature identification. IDs will be retained between iterations but will not be version controlled.

* **Type:** CharacterString
* **Length:** 38
* **Multiplicity:** \[1]

### featureCode

A unique feature code to facilitate analysis and styling.

* **Type:** [FeatureCodeValue](https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-vectormap-local/os-vectormap-local-technical-specification/feature-codes-and-descriptions)
* **Length:** 5
* **Multiplicity:** \[1]

### featureDescription

A description of the feature code.

* **Type:** [FeatureDescriptionValue](https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-vectormap-local/os-vectormap-local-technical-specification/feature-codes-and-descriptions)
* **Length:** 60
* **Multiplicity:** \[1]

### suppressed

The suppressed value of the Road, used for cartographic styling.

* **Type:** Boolean
* **Length:** N/A
* **Multiplicity:** \[1]

### inTunnel

Determines whether the road alignment is in a tunnel and is used for cartographic styling.

* **Type:** Boolean
* **Length:** N/A
* **Multiplicity:** \[1]