22.—(1) In the signs shown in—
(a)the permitted variants of diagrams 618.1, 618.2, 618.3, 618.3A, 620 and 820;
(b)diagrams 877, 953.3. 954, 954.2, 954.3, 954.5, 954.6, 954.7, 970, 973.2, 973.3, 974, 975, 1025.1, 1025.3 and 1025.4;
(c)the permitted variants of diagram 1028.3; and
(d)diagrams 1048, 1048.1, 1048.2, 1048.3 and 1048.4,
the expressions “bus” and “buses” have the meanings given in paragraph (2).
(2) “Buses” in the signs referred to in paragraph (1) means—
(a)motor vehicles constructed or adapted to carry more than 8 passengers (exclusive of the driver); and
(b)local buses not so constructed or adapted;
and “bus” shall be construed accordingly.