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There are 3,735 kilometres of risk-rated national highway in New South Wales, which is 18 per cent of the total National Land Transport Network. During the period from 2010-2014, there were 5,721 casualty crashes on these roads, accounting for 37 per cent of the national total. These casualty crashes included 278 deaths, which equates to 30 per cent of total fatalities across the network over the period.
The following table lists the national highways in New South Wales, with aggregated information provided.
The greatest number of casualty crashes in the New South Wales network occured on the Hume Motorway/Freeway, which accounts for 25 per cent of casualty crashes and 18 per cent of fatalities. In terms of fatalities, the Pacific Motorway/Highway has performed worse still and is responsible for 35 per cent of fatalities, compared with 21 per cent of casualty crashes.
This indicates that when crashes occur on the Pacific Motorway/Highway, they tend to have relatively severe outcomes.
The following table lists the worst 10 highway sections in New South Wales, ranked from highest to lowest risk. New South Wales has the highest risk section of national highway in Australia: the Western Motorway from Parramatta Road to the M7 Westlink. It has recorded 788 casualty crashes over the rating period of 2010-2014. The Hume Motorway from the M5 to Narellan Road also ranks in the top 10 worst highway sections in Australia.
The following table lists the best 10 highway sections in New South Wales, ranked from lowest to highest risk. They have all received a risk rating of low when compared against the entire Australian network.