All vehicles operating on the public landing area shall obtain clearance from the control tower before entry thereon. Between the hours of sunrise and sunset, such vehicles shall have a radio receiver in operation, or shall be painted bright yellow, or display a checkered flag, not less than three feet square, of international orange and white, the checks being at least one foot on each side; between the hours of sunset and sunrise, such vehicles shall have a radio receiver in operation or an overhead red light shall be displayed.
N.Y. Comp. Codes R. & Regs. Tit. 21 § 1274.6