23 lines
1 KiB
Markdown
23 lines
1 KiB
Markdown
---
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parent: Features
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---
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## Via-Points and NoGo-Areas
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BRouter can process via-points and nogo-areas, and [brouter-web](/brouter-web)
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offers on online interface to edit both of them.
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For offline use, nogo-areas can be defined as wayoints using a special naming
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convention. Handling of via-points during offline use depends on the mode of
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operation, see the README for details.
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NoGo-Areas are forbidden areas. In fact, these are areas, not points, with a
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default radius of 20m around the given point. Every way that is touching this
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disc of 20m radius is excluded by the routing algorithm. But the radius can also
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be specified: a waypoint `nogo` default to 20m radius, but `nogo100` defines a
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nogo area with 100m radius. Theres no limit in radius, so you can also exclude a
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whole geographic region with a single nogo-area.
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Nogo areas are useful if you encouter an obstacle that is not contained in the
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underlying map. But they can also be useful in planning alternative routes by
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excluding e.g. a certain bridge or ferry.
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