
The Expert will be specific knowledgeable people at the Department of Transport, Arrive Alive Communications, the Road Traffic Management Corporation or others who might have the expertise to answer the question.
Regulation 176 prescribes who may use an intermittently flashing light and the designated colour. Green flashing lights are reserved for people engaged in civil protection in terms of the Civil Protection Acts. Yellow flashing lights are reserved for breakdown vehicles, public service vehicles and abnormal vehicles.
Therefore it would appear that you are not allowed to add any of the two flashing lights to a motor cycle.