HRS §291C-174
If one traffic law is struck down, the rest stay valid
This section says that if a court decides one part of the state traffic laws is invalid, that decision does not affect the other parts. The rest of the traffic laws remain in effect.
everyone
The statute, as written — Severability
If any provision of the state traffic laws is held for any reason invalid by a court of competent jurisdiction, such decision shall not affect the validity of the remaining provisions of the state traffic laws.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.