In Victoria, the Road Safety (Traffic Management) Regulations prescribe requirements for the authorisation of traffic control devices, including speed limit signs. Speed limit sign sizes are categorised by codes ranging from A (smallest) to E (largest). Selection of the appropriate sign size is determined by the applicable speed zone, where sign sizes generally increase with speed limits. Various environmental and traffic conditions may warrant variations, such as, for exampl

In our previous brief on Wildlife crossings , some treatments were identified that can help to protect animals from vehicle strikes on roads. These include various types of underpass and overpass, bridges, ladders and perimeter fencing, common versions of which are outlined under Fauna Management in the Austroads Guide to Road Design Part 6B[1]. Treatment selection should reflect the types of fauna at risk and the ways the animals move, and should aim to provide continuous ha

Australia faces the likelihood of more frequent and destructive extreme weather events in the coming decades due to climate change. In terms of damage to infrastructure from such events, roads tend to be hit hardest, impacting road users, communities, industry and all levels of government. Acknowledging the impacts of floods in eastern States in 2021-22, a 2023 Parliamentary Inquiry into the issue reported estimated costs of road repairs and rebuilds of approximately $3.8 bil