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T.RD.M.V.2.6<br />

(Al/2002)<br />

Table 6.4.2.1<br />

Sign Locations<br />

Sign Type<br />

V height<br />

(mm)<br />

Location<br />

Illumination<br />

Advance<br />

Direction Sign<br />

Cantilever<br />

or gantry or<br />

Roadside*<br />

250<br />

500m -1000m**<br />

before start of<br />

deceleration lane<br />

Externally illuminated and<br />

reflectorised<br />

Countdown,<br />

Markers<br />

Roadside,)<br />

1200mm)<br />

x )<br />

700mm)<br />

-<br />

300m) before<br />

) start of<br />

200m) deceleration<br />

100m) lane<br />

Reflectorised<br />

Final Advance<br />

Direction Sign<br />

Gantry or<br />

Roadside*<br />

250<br />

At start of<br />

deceleration lane<br />

Externally illuminated and<br />

reflectorised<br />

Confirmatory<br />

Direction Sign<br />

Roadside<br />

250<br />

250<br />

Located near<br />

gore<br />

Reflectorised<br />

* Mixed Cantilever/Gantry/Roadside Signs may be the best method of signing, but once a<br />

roadside sign is introduced in the sequence of approach signing, roadside signs must be<br />

used for all direction signs in advance of that roadside sign, in that particular sequence.<br />

**The exact location depends on the higher design speed and the number of traffic lanes as<br />

shown in Diagram 6.4.2.2.<br />

Table 6.4.2.2<br />

Visibility Distances for Directional Signs<br />

Sign Type<br />

Advance Direction Sign<br />

Final Advance Direction Sign<br />

Confirmatory Direction Sign<br />

Minimum clear visibility<br />

distance to sign (m)<br />

180 (135 for gantry signs)<br />

180<br />

105

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