28.—(1) Without prejudice to regulation 27, a zig-zag line shall convey the requirement that, whilst any motor vehicle (in this regulation called “the approaching vehicle”) or any part of it is within the limits of a controlled area and is proceeding towards the signal-controlled crossing facility to which the controlled area relates, the driver of the vehicle shall not cause it or any part of it—
(a)to pass ahead of the foremost part of any other motor vehicle proceeding in the same direction; or
(b)to pass ahead of the foremost part of a vehicle which is stationary for the purpose of complying with the indication given by a traffic light signal for controlling vehicular traffic.
(2) In paragraph (1)—
(a)the reference to a motor vehicle in sub-paragraph (a) is, in a case where more than one motor vehicle is proceeding in the same direction as the approaching vehicle in a controlled area, a reference to the motor vehicle nearest to the signal-controlled crossing facility to which the controlled area relates; and
(b)the reference to a stationary vehicle is, in a case where more than one vehicle is stationary in a controlled area for the purpose of complying with the indication given by a traffic light signal for controlling vehicular traffic, a reference to the stationary vehicle nearest the signal-controlled crossing facility to which the controlled area relates.