Can further regrading of the asphalt surface of the Cahill Expressway reduce the need for noise walls?

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Can further regrading of the asphalt surface of the Cahill Expressway reduce the need for noise walls?

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• Recent resurfacing of the expressway is a welcome move which helps but does not solve the noise problem. The visual impact of traffic in the parkland and noise levels above EPA goals for passive recreation land remain. • The acoustic report on our website is based on levels following the re-sheeting of the road surface closest to the Domain.