Haw. Rev. Stat. § 291C-170
In addition to the penalties heretofore provided, the court may revoke or may suspend, for a period not to exceed one year, the license of any driver convicted of a violation of any section or provision of the state traffic laws involving a vehicle in motion.
[L 1978, c 111, pt of §2; am L 1979, c 105, §31]