(1)  This regulation applies if a bus has been fitted with a warning sign for the purposes of regulation 98 .

(2)  A warning sign on the front of a bus must display –

(a) an image of the 40km/h speed-limit sign as specified in Australian Standard AS 1743 Road Signs — Specifications (image R4-1(40)); or

(b) the word or words "SCHOOL" or "SCHOOL BUS" in capital letters at least 100 millimetres high; or

(c) if the warning sign is an electronic sign fitted on the front of the bus that is also used to display the location to which the bus is travelling, the word or words "SCHOOL" or "SCHOOL BUS" in capital letters at least 100 millimetres high while the warning lights fitted to the bus are flashing as required under regulation 100 .

(3)  A warning sign on the rear of a bus must display –

(a) an image of the 40km/h speed-limit sign as specified in Australian Standard AS 1743 Road Signs — Specifications (image R4-1(40)); and

(b) the words "WHEN LIGHTS FLASH".

(4)  The part of the warning sign referred to in subregulation (2)(a) and the part of the warning sign referred to in subregulation (3)(a) must –

(a) be square or rectangular; and

(b) be of the dimensional proportions specified in Australian Standard AS 1743 Road Signs — Specifications (image R4-1(40)) with the red circle having a diameter of at least –

(i) 200 millimetres, if the sign is on the front of the bus; or

(ii) 440 millimetres, if the sign is on the rear of the bus; and

(c) be coated with retroreflective material of class 1 or 2 that meets Australian Standard AS 1906:2007, Retroreflective materials and devices for road traffic control purposes .

(5)  The part of the warning sign referred to in subregulation (3)(b) must –

(a) be written in 60 millimetre-high black lettering, using series D characters as specified in Australian Standard AS 1744-1975 Standard Alphabets for Road Signs , on a white background; and

(b) for the words "WHEN LIGHTS", use the maximum even space possible between the letters of each word over a distance of 450 millimetres with a minimum separation between the words of 60 millimetres; and

(c) for the word "FLASH", use the maximum even space possible between the letters over a distance of 450 millimetres; and

(d) comprise either –

(i) two separate signs with the words "WHEN LIGHTS" displayed on one sign 450 millimetres long and 70 millimetres high and the word "FLASH" displayed on another sign of the same size; or

(ii) one sign 900 millimetres long and 70 millimetres high.

(6)  Subregulation (5)(b) , (c) and (d) do not apply in respect of a warning sign fitted to a bus if –

(a) the bus is fitted with a warning sign that –

(i) displays the words "WHEN LIGHTS FLASH", using the maximum even spacing possible between the letters over a distance of 300 millimetres; and

(ii) is a single sign that is a minimum of 300 millimetres wide; and

(iii) is no less than 210 millimetres, and no more than 440 millimetres, high; and

(iv) displays each word on a separate line where each word is centred horizontally on the line; or

(b) the bus has a GVM that does not exceed 6 000 kilograms and is fitted with a warning sign that is made up of 3 separate signs –

(i) with each sign being at least 300 millimetres wide and 70 millimetres high; and

(ii) that display, when viewed together, the words "WHEN LIGHTS FLASH", using the maximum even spacing possible between the letters over a distance of 300 millimetres; and

(iii) that are aligned horizontally; and

(iv) that are vertically stacked without a space between each sign so as to read "WHEN LIGHTS FLASH".

(7)  The part of the warning sign referred to in subregulation (3)(b) must be placed –

(a) if any of the warning lights on the rear of the bus is mounted below the horizontal centre-line of the bus, immediately above the 40km/h speed-limit sign; or

(b) if the part of the warning sign comprises 2 signs in accordance with subregulation (5)(d)(i) , one on either side of the 40km/h speed-limit sign, aligned horizontally as close as possible with the top or bottom perimeter of the 40km/h speed-limit sign; or

(c) if the bus has a GVM not exceeding 6 000 kilograms and the part of the warning sign comprises 2 signs in accordance with subregulation (5)(d)(i) , so that both signs are fitted immediately above, below or to one side of the 40km/h speed-limit sign; or

(d) if the part of the warning sign complies with subregulation (5)(d)(ii) , immediately above or below the 40km/h speed-limit sign; or

(e) if the part of the warning sign complies with subregulation (6) , immediately to one side of the 40km/h speed-limit sign.

(8)  If, due to the design of the bus, the part of the warning sign referred to in subregulation (3)(b) is unable to be fitted within the immediate proximity of the 40km/h speed-limit sign as required in subregulation (7)(a) , (c) , (d) or (e) , that part of the warning sign is to be fitted within 150 millimetres of the 40km/h speed-limit sign in the location required in the relevant paragraph.

(9)  Any separate signs that make up the warning sign referred to in subregulation (3)(b) must be placed so as to read "WHEN LIGHTS FLASH".