Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p30
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 30/225)
Character Range: 392992–395629

proportion of letters, numbers and symbols used on movement area guidance signs (shows matters)

8.83 The face width of a sign

       (1) The face width of a sign must provide on either side of the legend a minimum width equal to half the height of the legend.

       (2) In the case of a single-letter standalone sign, the face width must be increased to the height of the legend.

       (3) The face width of a mandatory instruction sign provided on 1 side of a taxiway only must not be less than:

(a) for a code 3 or 4 runway — 1.94 m; and

(b) for a code 1 or 2 runway — 1.46 m.

8.84 Structural

        MAGS must be frangible in accordance with section 8.113.

8.85 Illumination

       (1) MAGS must be illuminated for the following:

(a) runways and associated taxiways at aerodromes with scheduled international air transport operations;

(b) runways and associated taxiways with:

 (i) visual range conditions less than 800 m; or

 (ii) RVR conditions less than 800 m.

       (2) MAGS may be illuminated for runways and associated taxiways at aerodromes that:

(a) do not have scheduled international air transport operations; and

(b) do have visual range conditions or RVR conditions equal to, or greater than, 800 m.

       (3) For runways and taxiways mentioned in subsection (2), a retroreflective sign may be used as an alternative to illumination, but not if the location of the sign would make a retroreflective sign ineffective.

       (4) Illumination:

(a) may be external or internal to the sign; and

(b) must not cause any visual hazard to aircraft and vehicles, for example, from glare or dazzle.

       (5) The average sign luminance must be as follows:

(a) for operations conducted in runway visibility, or RVR, of less than 800 m — the average sign luminance for the sign colour mentioned in a row of column 1 of Table 8.85 (5) (a) must be at least that mentioned in the same row in column 2;

     Table 8.85 (5) (a)   Luminance for RVR of less than 800 m

Sign Colour  Average sign luminance
Red          30 cd/m2
Yellow       150 cd/m2
White        300 cd/m2

(b) for operations conducted at night, in RVR of 800 m or more — average sign luminance for the sign colour mentioned in a row of column 1 of Table 8.85 (5) (b) must be at least that mentioned in the same row in column 2.

     Table 8.85 (5) (b)   Luminance for night operations with RVR of 800 m or more

Sign Colour  Average sign luminance
Red          10 cd/m2
Yellow       50 cd/m2
White        100 cd/m2

       (6) The luminous ratio between the red and white elements of a mandatory instruction sign must not be less than 1:5