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Diagrammatic Signs
What are Diagrammatic Signs?
Diagrammatic Road Signs are special types of road signs that use diagrams or layouts to represent:
- Lane configurations
- Interchanges and junctions
- Merges, splits, or diverging routes
- Complex freeway layouts
They are directional and informational signs that visually depict how roads or lanes are arranged ahead, allowing drivers to choose the correct lane in time, especially on high-speed roads or freeways.
Main Purpose of Diagrammatic Signs
- To illustrate complex road layouts
- To guide drivers to the correct lane before a split or exit
- To help in navigating interchanges, ramps, merges, and diverges
- To assist with long-distance driving on national roads (N-routes) or freeways

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