> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/transport-network-portfolio/os-multi-modal-routing-network/os-mrn-technical-specification/code-lists/junctionvalue.md).

# JunctionValue

This code list is used in association with the Junction attribute which is present within the Transport Link Feature Type. The code list describes the nature of the junction that the Transport Link forms part of.

| Label      | Definition                                                                                                                                                                                                                                      |
| ---------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| roundabout | A road junction where the traffic goes around a non-traversable island and has right of way.                                                                                                                                                    |
| circular   | A road junction where the traffic goes around a non-traversable island but does not always have right of way.                                                                                                                                   |
| jughandle  | A jughandle is an at-grade intersection which includes a type of ramp or slip road that takes traffic turning across the centreline (left in right-hand-drive countries) in the other direction before looping around.                          |
| filter     | A type of junction that assigns priority to junction users based on the order in which they arrive at the junction. It is usually combined with a box junction so users of the junction must not enter the junction unless their exit is clear. |


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