35.—(1) Light signals for conveying to pedestrians the information mentioned in paragraph (4) of this Regulation may be used facing across the carriageway in conjunction with the light signals prescribed by paragraph (2) of Regulation31 or those light signals as varied in accordance with the provisions of Regulation 32 and, if so used, shall be of the size, colour and type shown in Schedule 4.
(2) The height of the lower edge of the container enclosing the light signals from the surface of the carriageway in the immediate vicinity shall be not less than 7 feet nor more than 8 feet 6 inches.
(3) The said signals shall be so designed that—
(a) the red figure shown in the said Schedule (hereinafter referred to as "the red signal") can be internally illuminated by a steady light;
(b) the green figure shown in the said Schedule (hereinafter referred to as "the green signal") can be internally illuminated by a steady light or by a flashing light, flashing at a rate of not less than 54 nor more than 125 flashes per minute; and
(c) when one signal is illuminated the other signal is not illuminated.
(4) The period during which in the interests of safety
(a) pedestrians should not cross the carriageway shall be shown by the red signal during such time as it is illuminated;
(b) pedestrians should cross the carriageway shall be shown by the green signal during such time as it is illuminated by the steady light; and
(c) pedestrians should not start to cross the carriageway shall be shown by the green signal during such time as it is illuminated by the flashing light.
