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Road maintenance and repairing works are usually required to be carried out at the less busy night hours to avoid causing serious interruption to heavily trafficked roads during daytime. Quieter equipment or methods for night-time works are needed to minimise the construction noise impact.

The data show that the sound pressure level of noise generated using quieter equipment and methods is significantly lower than that of using traditional equipment and methods

 

Noise reduction for some mitigation measures for reference.

Noise reduction

Noise Abatement of Railhead & Rail Groove Grinding Machines

Noise Abatement of Railhead & Rail Groove Grinding Machines

Noise enclosure Installation grind wheel covered by the noise enclosure.  CCTV installed to view the grind wheel operation. 

 

 

Courtesy of Hong Kong Tramways Ltd.

Sound pressure level in dB(A) at 25m from equipment 58-60dB(A)