1.5.3. “Schedule 9, Part 6, item 25” becomes “S9‑6‑25”
1.5.4. “Schedule 11, Part 6, paragraph 3” becomes “S11‑6‑3”
1.5.5. “Schedule 12, Part 2” becomes “S12‑2”
1.5.6. The numbering system contained in the Manual utilises three levels comprising sections,
sub‑headings and numbered paragraphs. Internal references are in
bold blue .
1.6 Use of warning signs 1.6.1. Warning signs are used to alert drivers to potential danger ahead. They indicate a
need for special caution by road users and may require a reduction in speed or some other
manoeuvre.
1.6.2. Warning signs can play an important part in improving road safety. However, they should
only be used where there is a specific safety issue or hazard, not to sign readily apparent
conditions or routine features of the road, such as bends and junctions. Overuse of warning
signs can dilute their effectiveness and tends to bring them into disrepute. For example, it
should not be necessary to place roundabout or traffic signal warning signs in addition to map-
type advanced direction signs or where the traffic signals or roundabout are clearly visible.
Similarly, junction warning signs should not be necessary in street‑lit urban areas, where there
are frequent side‑road junctions. Local authorities should work with local communities where
specific issues and concerns are raised, to make sure the right solution is found. Warning signs
should only be installed where there is an identified hazard or road safety problem, and not to
solely meet a perceived need. Unjustified signing should not be used at individual locations
simply in response to complaints from the public. Care should be taken to ensure that a route is
treated consistently, especially where it crosses the boundary between two traffic authorities.