Cullis v Ahern

This case concerned an appeal to the High Court of Australia from a decision of the Supreme Court of Victoria. The dispute arose from a charge laid by Timothy Ahern against Gibbs Cullis for driving a motor cycle within the City of Melbourne between sunset and sunrise without a rear lamp, contrary to a by-law of the City of Melbourne. The by-law, enacted under section 91 of the Act 6 Vict. No. 7, required all vehicles to carry a lighted rear lamp visible from the rear. The defendant had a lamp on his motor cycle, but it only illuminated the front.

The legal issues before the High Court were whether the by-law was validly made, whether a motor cycle constituted a "vehicle" within the meaning of the by-law, and crucially, whether the by-law, as applied to motor cycles, was inconsistent with or repugnant to section 12 of the Motor Car Act 1909, rendering it of no force or effect under section 15(5) of that Act. The appellant argued that the Motor Car Act 1909 intended to exclusively govern the lighting requirements for motor cycles, thereby precluding municipal by-laws from imposing additional obligations.

The High Court, affirming the decision of the Supreme Court, held that the by-law was within the powers conferred by section 91 of the Act 6 Vict. No. 7, as it related to the good rule and government of the town. It was also determined that a motor cycle was a "vehicle" for the purposes of the by-law. Regarding the alleged inconsistency with the Motor Car Act 1909, the Court reasoned that section 12 of that Act prescribed a minimum standard for motor cycle lighting but did not indicate an intention to occupy the entire legislative field exclusively. Therefore, a municipal by-law imposing an additional requirement, such as a rear lamp, was not inconsistent with the Act.

Consequently, the appeal was dismissed with costs.