HRS §264-43
Responsibility for state highways
This section says the state transportation department is responsible for all state highways. It must follow state and federal laws, but it does not have to follow county subdivision rules.
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The statute, as written — Responsibility
The department of transportation shall acquire, subdivide, consolidate, construct, maintain, and administer all highways comprising the state highway system in accordance with all state and federal laws and exempt from county subdivision ordinances.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.