convey the prohibition that vehicular traffic shall not proceed beyond those lights and when displayed over the carriageway so its to operate in relation to vehicular traffic proceeding in the traffic lane (as defined by Regulation 35(1) situated immediately beneath them, the said lights convey the prohibition that such vehicular traffic as aforesaid shall not proceed beyond those lights:
Provided that this paragraph shall not apply to a vehicle when it is being used on such an occasion as is specified in Regulation 34(1)(b); and for that vehicle when it is being so used, the intermittent red lights whether so displayed at the side or or over the carriageway shall have no significance.
(5) The significance of the light signals prescribed by Regulation 31(4) shall be as follows:—
(a) the amber signal shall convey the prohibition that vehicular traffic shall not proceed beyond the stop line on the carriageway provided in conjunction with the signal or, if that line is not for the time being visible or there is no stop line, beyond the post or other structure on or in which the primary signals are mounted, except in the case or any vehicle which when the signal first appears is so close to the said post or structure, that it cannot safely be stopped before passing the line post or structure; and
(b) the intermittent red signals shall convey the prohibition that vehicular traffic shall not proceed beyond the stop line on the carriageway provided in conjunction with the signals or if that line is not for the time being visible or there is no stop line, beyond the said post or structure.
(6) In this Regulation,
(a) the expression "Stop line" means the road marking shown in diagram 1001 placed on the carriageway in conjunction with light signals being either primary signals alone, or secondary signals alone or both primary and secondary signals;
(b) any reference to light signals, to the signals or to a signal or a particular colour, is where secondary signals have been erected its well as primary signals, a reference to the light signals, signals or particular signal displayed by both the primary signals and the secondary signals or by either the primary signals operating without the secondary signals, or by the secondary signals operating without the primary signals;
(c) the expression "primary signals" means light signals erected on or near the carriageway of the road and sited in the vicinity of either one and or both ends of the stop line or, if there is no stop line, sited at either or both edges or the carriageway or part of that carriageway which is in use by the traffic approaching and controlled by the signals; and
(d) the expression "secondary signals" means light signals erected on or near the carriageway facing approaching traffic in the same direction its the primary signals but sited beyond those signals as viewed from the direction of travel of such traffic.
35.—(1) Light signals for conveying to pedestrians the information mentioned in paragraph (4) may be used facing across the carriageway in connection with the light signals prescribed by Regulation 31(2) or those light signals as varied in accordance with the provisions or Regulation 32 and, if so used shall be of the size, colour and type shown in diagram 4001 or 4001 in schedule 4.
