1.—(1) Subject to the following provisions of this Part of this Schedule the traffic signs which are to be placed at or near a Zebra crossing for the purpose of indicating it shall consist of globes each of which is—
(a)coloured yellow or fluorescent yellow;
(b)not less than 275 nor more than 335 mm in diameter;
(c)illuminated by a flashing light or, where the Secretary of State so authorises in writing in relation to a particular crossing a constant steady light; and
(d)mounted on a post or bracket so that the lowest part of a globe is not less than 2.1 metres nor more than 3.1 metres above the surface of the ground immediately beneath it.
(2) One globe shall be placed at each end of the crossing and, if there is a refuge for pedestrians or central reservation on the crossing, one or more globes may, if the traffic authority thinks fit, be placed on the refuge or central reservation.
2. Where a globe is mounted on or attached to a post, whether or not specially provided for the purpose—
(a)the post shall be coloured in alternate black and white bands, the lowest band being coloured black;
(b)the bands shall be not less than 275 mm nor more than 335 mm wide except that the lowest band may be up to 1 metre wide; and
(c)the post may be internally illuminated.
3. A globe or the post on which it is mounted may be fitted with all or any of the following—
(a)a backing board or other device designed to improve the conspicuousness of the globe;
(b)a shield or other device designed to prevent or reduce light shining into adjacent premises;
(c)a light to illuminate the crossing.
4. A crossing shall not be taken to have ceased to be indicated in accordance with this Part of this Schedule by reason only of—
(a)the imperfection, disfigurement or discolouration of any globe or post, or
(b)the failure of illumination of any of the globes.
5. Nothing in this Part of this Schedule shall be taken to restrict regulation 8 or 9.