At all times, a lift tail gate shall be placed in a vertical position and securely locked or be completely withdrawn under the body of the truck, except:
(1) When the truck is stopped and the lift tail gate is being used in loading or unloading freight; and
(2) That the lift tail gate of a pickup truck, while in operation and carrying passengers in the bed or load-carrying area, shall be in compliance with HRS § 291-14.
(Sec. 15-19.40, R.O. 1978 (1983 Ed.)) (1990 Code, Ch. 15, Art. 19, § 15-19.40) (Am. Ord. 89-130)