Toolbox from the EC FP7 HOSANNA project for the reduction of road and rail traffic noise in the outdoor environment
Paper in proceedings, 2014

This paper offers a brief overview of innovative methods for road and rail traffic noise reduction between source and receiver. These include using new barrier designs, planting of trees, treatments of ground and road surfaces and greening of building façades and roofs using natural materials, like vegetation, soil and other substrates in combination with recycled materials and artificial elements. The abatements are assessed in terms of numerically predicted sound level reductions, perceptual effects and cost–benefit analysis. Useful reductions of noise from urban roads and tramways are predicted for 1-m-high urban noise barriers and these are increased by adding inter-lane barriers. A 3 m wide 0.3 m high lattice ground treatment, a carefully planted 15-m-wide tree belt and replacing 50 m of paved areas by grassland are predicted to give similar reductions. Tree belts are shown to be very cost-effective and combining tall barriers with a row of trees reduces the negative impact of wind. Green roofs may significantly reduce the noise at the quiet side of buildings.



cost benefit


green façades






numerical methods


green roofs


listening tests




Jens Forssén

Chalmers, Civil and Environmental Engineering, Applied Acoustics, Vibroacoustics

Maarten Hornikx

Chalmers, Civil and Environmental Engineering, Applied Acoustics, Vibroacoustics

Bart van der Aa

Chalmers, Civil and Environmental Engineering, Applied Acoustics, Vibroacoustics

Mats Nilsson

Maria Rådsten-Ekman

Jérôme Defrance

Philippe Jean

Faouzi Koussa

Julien Maillard

Dirk Van Maercke

Keith Attenborough

Imran Bashir

Shahram Taherzadeh

Hadj Benkreira

Kirill Horoshenkov

Amir Khan

Jian Kang

Yuliya Smyrnova

Dick Botteldooren

Bert De Coensel

Timothy Van Renterghem

Ronny Klæboe

Marjan Mosslemi

Knut Veisten

Manuel Männel

Bruno Vincent

Jin Yong Jeon

Hyung Suk Jang

Joo Young Hong

Transport Research Arena 2014, Paris, France


Areas of Advance


Building Futures (2010-2018)

Subject Categories

Other Environmental Engineering

Other Civil Engineering

Fluid Mechanics and Acoustics

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