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In page Coolgardie–Esperance Highway:

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Main Roads Western Australia monitors traffic volume across the state's road network, including various locations along Coolgardie–Esperance Highway.[9]:3 In 2013/14, the traffic volume ranged between 350 and 4000 vehicles per day, with the highest volume recorded south of South Coast Highway. The highest percentage of heavy traffic was 51.6% north of Goldfields Highway.[9]:5