> For the complete documentation index, see [llms.txt](https://docs.os.uk/osngd/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/osngd/code-lists/code-lists-overview/restrictionvalue.md).

# restrictionvalue

This code list is used in association with the Restriction attribute which is present within the Restriction Feature Type. The code list describes the nature of the access restriction.

| Label                      | Definition                                                                                                                         |
| -------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- |
| Forbidden Legally          | Access to the transport element is forbidden by law.                                                                               |
| Mandatory Turn             | No definition available.                                                                                                           |
| Maximum Double Axle Weight | The maximum weight per double axle of a vehicle allowed at a transport element. Note: This value applies to wheeled vehicles only. |
| Maximum Height             | The maximum height of a vehicle which can pass under another object.                                                               |
| Maximum Length             | The maximum length of a vehicle allowed at a transport element.                                                                    |
| Maximum Single Axle Weight | The maximum weight per single axle of a vehicle allowed at a transport element. Note: This value applies to wheeled vehicles only. |
| Maximum Total Weight       | The maximum total weight of a vehicle allowed at a transport element.                                                              |
| Maximum Triple Axle Weight | The maximum weight per triple axle of a vehicle allowed at a transport element. Note: This value applies to wheeled vehicles only. |
| Maximum Unladen Weight     | No definition available.                                                                                                           |
| Maximum Width              | The maximum width of a vehicle allowed on a transport element.                                                                     |
| No Turn                    | No definition available.                                                                                                           |
| One Way                    | No definition available.                                                                                                           |
| Physically Impossible      | Access to the transport element is physically impossible due to the presence of barriers or other physical obstacles.              |
| Private                    | Access to the transport element is restricted because it is privately owned.                                                       |


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.os.uk/osngd/code-lists/code-lists-overview/restrictionvalue.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.