Motor Traffic (Amendment) Act (No 5) 1984 (ACT)

The case concerns the Motor Traffic (Amendment) Ordinance (No. 5) 1984, which was introduced by the Australian Capital Territory government to amend the existing Motor Traffic Ordinance 1936. The amendment specifically addresses the speed limit for heavy vehicles, setting it at 80 kilometres per hour for vehicles with a laden weight exceeding 4.5 tonnes, excluding motor omnibuses. The legislation was enacted to address safety concerns associated with the operation of heavy vehicles on public streets.

The legal issues before the court involved the validity and constitutionality of the Ordinance under the Seat of Government (Administration) Act 1910. The court had to determine whether the Australian Capital Territory had the legislative authority to enact such an ordinance and whether it complied with federal laws. Additionally, the court examined whether the amendment was within the scope of the powers granted to the ACT government and whether it adhered to the principles of federalism.

The court found that the Motor Traffic (Amendment) Ordinance (No. 5) 1984 was valid and constitutional. It ruled that the ACT had the legislative authority to enact the amendment under the Seat of Government (Administration) Act 1910. The court also confirmed that the amendment was consistent with federal laws and within the powers granted to the ACT government. The court emphasised the importance of ensuring road safety and upheld the amendment as a legitimate exercise of the Territory's legislative authority.

The final orders of the court upheld the Motor Traffic (Amendment) Ordinance (No. 5) 1984 as valid and in compliance with the relevant legislative frameworks. The new speed limit for heavy vehicles was confirmed as a legitimate measure to enhance road safety, and the amendment was deemed to be within the scope of the ACT's legislative powers.