Lamshed v Lake

The case of Lamshed v Lake concerned a dispute between Kenneth Harrold Lamshed, a senior constable in South Australia, and Percy Lake, a carrier from the Northern Territory. Lake was charged with breaching Section 14 of the Road and Railway Transport Act 1930-1939 (SA) for operating a vehicle carrying goods for hire on a controlled route without a licence. Lake contended that Section 10 of the Northern Territory (Administration) Act 1910-1955, which declared trade, commerce, and intercourse between the Northern Territory and the States to be absolutely free, rendered the South Australian Act inapplicable to his journey from Adelaide to Alice Springs. The matter was removed to the High Court of Australia.

The High Court was required to determine whether Section 10 of the Northern Territory (Administration) Act 1910-1955 validly operated within South Australia to override the inconsistent provisions of the South Australian Road and Railway Transport Act 1930-1939. Specifically, the Court had to consider the scope of the legislative power granted to the Commonwealth Parliament under Section 122 of the Constitution to make laws for the government of territories, and whether such laws could have an operation beyond the territorial limits of the Northern Territory and prevail over state legislation under Section 109 of the Constitution.

A majority of the High Court, comprising Dixon C.J., Webb, Kitto, and Taylor JJ., held that Section 10 of the Northern Territory (Administration) Act 1910-1955 was a valid law of the Commonwealth that applied in South Australia and prevailed over the inconsistent State law. The Court reasoned that Section 122 of the Constitution grants the federal Parliament, in its capacity as the national legislature, the power to make laws for the government of a territory, and that such laws, if relevant to the subject matter, operate wherever the Commonwealth's authority extends. They found Section 10 to be fairly incidental to the purpose of governing the Northern Territory and an affirmative law, not merely a limitation on State power. McTiernan and Williams JJ. dissented, with McTiernan J. arguing that Section 10 was not addressed to the States and would have been invalid if it had attempted to restrain State powers, while Williams J. considered laws made under Section 122 to be non-federal local laws incapable of operating within a State.

The High Court ordered that the defendant, Percy Lake, was not guilty of the offence charged. This outcome was based on the majority's conclusion that Section 10 of the Northern Territory (Administration) Act 1910-1955, by virtue of Section 109 of the Constitution, rendered the South Australian Act inoperative in relation to Lake's interstate journey.