D4-4: Sight Board Sign - Sizes from 1800x300mm
Manufactured to Australian Standard AS 1742 & AS 1743.
D4-4A Is no longer used by dept of Main Roads Qld. Instead you should use D4-1-1 side by side
This sign is for use at a “T" intersection
Sight boards (D4-4) may be erected to face the stem of a T-junction where approach speeds are high on the terminating leg of the intersection, and where standard intersection signposting would not provide sufficient warning of the intersection. Typical sizes range from 4000 mm x 400 mm to 6000 mm x 600 mm.
Two Unidirectional Hazard markers (D4-1-1) erected end to end to simulate a Bidirectional Hazard marker may be used as an alternative.
Intersection direction signs (see Clause 2.10.5) or Finger boards (see Clause 2.10.6) may be mounted In conjunction with these sight boards.
Non-standard 1800x300mm option is available by special order at a far cheaper price.
Most people use at least 1 pole per metre of length when the sign has bracing / ribbing.
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