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Other overpasses were left to be reconstructed to the new minimum vertical clearance at later times. [2] Australia defines minimum vertical clearance based on types of roads. The minimum vertical clearance is 5.4 metres (17 ft 9 in) for main roads and highways, and 4.6 metres (15 ft 1 in) for other local roads with road authority approval.
The very first standardised road signs in Australia used yellow circular signs as regulatory signs, a feature now preserved in "pedestrian crossing" and "safety zone" signs. [ 2 ] In 1964, Australia adopted a variation of the American Manual on Uniform Traffic Control Devices (MUTCD) road sign design, which is a modified version of the 1954 ...
Through urban areas, at least one routing is to have 16-foot (4.9 m) clearances, but others may have a lesser clearance of 14 feet (4.3 m). Sign supports and pedestrian overpasses must be at least 17 feet (5.2 m) above the road, except on urban routes with lesser clearance, where they should be at least 1 foot (30 cm) higher than other objects.
The Australian Road Rules project was established in the early 1990s, aimed at establishing a model set of road rules that states and territories across Australia could adopt in their local laws to create improved national uniformity or consistency. Responsibility for the project was passed to the National Road Transport Commission in 1995. [8]
This is an accepted version of this page This is the latest accepted revision, reviewed on 20 December 2024. Directionality of traffic flow by jurisdiction Countries by direction of road traffic, c. 2020 ⇅ Left-hand traffic ⇵ Right-hand traffic No data Left-hand traffic (LHT) and right-hand traffic (RHT) are the practices, in bidirectional traffic, of keeping to the left side and to the ...
In Western Australia, roads controlled and maintained by the state road authority, Main Roads Western Australia, are either highways or Main Roads. Any road or section of road may be proclaimed a highway by the Governor of Western Australia, on the recommendation of the Commissioner of Main Roads, under Section 13 of the Main Roads Act 1930. [27]
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As the Commonwealth of Australia Constitution Act [2] did not specify Federal control over road transport, it effectively relinquished full jurisdiction of that area to the States. In 1952, truck drivers were frustrated by the levies on interstate road transport, which were designed to protect the state-owned railways.