Haw. Rev. Stat. § 105-8
The letters of such words as are required by sections 105-6 and 105-7 shall be painted or applied on all such motor vehicles in characters of a plain, bold size.
[L 1919, c 227, pt of §2; RL 1945, §463; am L 1949, c 389, pt of §1(b); RL 1955, §7-17; HRS §105-8; am L 1969, c 38, §2]