Section 16(1) in Dangerous Goods (Arrival, Receipt, Transport, Handling and Storage), in Jawaharlal Nehru Port Regulations, 2007
(1)The Master of vessel carrying dangerous goods while approaching or leaving the port and during the time that it remains within the limits of the port shall exhibit conspicuously :-(a)between sunrise and sunset a red flag not less than metre square, and(b)between sunset and sunrise a single red light visible all around the horizon.
