‘Junction Ahead’ signs provide advance warning of a junction. In most instances they illustrate the principal through route at the junction by varying the widths of the road symbol arms. The signs are not intended to be true maps of the junction, but the sign selected should be reasonably representative of the layout.
The main locations where warning signs should be used to warn of junctions ahead are:
- Junctions with a road of lesser importance.
- Junctions with a road of greater importance.
- Junctions where traffic merges.
- Junctions with traffic control.