97—Direction indicator lights on motor vehicles
(1) A motor vehicle with 4 or more wheels that was built after August 1966 must have—
(a) a pair of direction indicator lights fitted on, or towards, its front that face forwards; and
(b) a pair of direction indicator lights fitted on, or towards, its rear that face backwards.
(2) A motor vehicle with less than 4 wheels that was built after June 1975 must have—
(a) a pair of direction indicator lights fitted on, or towards, its front that face forwards; and
(b) a pair of direction indicator lights fitted on, or towards, its rear that face backwards.
(3) A motor vehicle that is not required to have direction indicator lights may have—
(a) 1 or more pairs of direction indicator lights that are visible from both the front and rear of the vehicle; or
(b) both—
(i) a pair of direction indicator lights fitted on, or towards, its front that face forwards; and
(ii) a pair of direction indicator lights fitted on, or towards, its rear that face backwards.