An AspectAny valid visual indication of a Signal as displayed to the driver. More which advises the driver that the next SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More may be at DangerAn indication given by a Signal to stop. More. It
is indicated by a Single Yellow (Aspect)Displayed by a Colour Light Signal, informs the driver to expect the next Main Signal to be at Danger. More or a Semaphore Distant arm
horizontal.