72.—(1) Any case where a train, travelling on a running line or entering a running line from a siding, passes without authority a signal displaying a stop aspect unless—
(a)the stop aspect was not displayed in sufficient time for the driver to stop safely at the signal; or
(b)the line is equipped with automatic train protection equipment which is in operation.
(2) In this paragraph “automatic train protection equipment” means equipment which automatically controls the speed of a train, either by bringing it to a halt or reducing its speed, in the event that the train passes a signal without authority or exceeds a prescribed speed limit.