5. The trailers of a sightseeing vehicle must be equipped with(1) two red stop lights, at the rear, at the same height, one on each side of the vertical centreline and as far apart as practicable;
(2) two red or amber turn-signal lights, at the rear, at the same height, one on each side of the vertical centreline and as far apart as practicable;
(3) one amber side reflector on each side, as far forward as practicable;
(4) one red side reflector on each side, as far to the rear as practicable.