Pedestrian demand unit
3.—(1) A pedestrian demand unit shall be placed at each end of a crossing.
(2) Each such unit shall consist of a device the principal features of which are a signal display of the size, colour and type shown in the diagram in Part II of this Schedule and which—
(a)complies with the requirements of sub-paragraph (3); and
(b)includes a push button or other switching device which in some way indicates to pedestrians that it has been operated.
(3) The requirements referred to in sub-paragraph (2)(a) are—
(a)the signal display must comprise a red figure and a green figure, both of which can be internally illuminated;
(b)while one figure is illuminated the other figure must not be capable of being illuminated; and
(c)the green figure must be capable of being illuminated only whilst there is conveyed to vehicular traffic, by means of the red vehicular light signal prescribed by paragraph 2, a prohibition against entering the limits of the Puffin crossing at or near which the unit is displayed and at no other time.
(4) The pedestrian demand unit may incorporate a device for emitting tactile or audible signals whilst the green figure is illuminated.
(5) Units consisting of only the red and green figures or the push button and legend comprised in a pedestrian demand unit may be provided at a crossing in addition to pedestrian demand units.