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STOCKHOLM, Sweden

Grant
Agency: Cordis | Branch: FP7 | Program: CP-FP | Phase: SST.2008.1.1.3. | Award Amount: 5.11M | Year: 2010

The CITYHUSH project will support city administrations in the production and implementation of noise action plans according to the directive EC 2002/49. The identified hot spots and noise acting plans made with the existing technology suffer from major shortcomings: 1. poor correlation between hot spots with annoyance and complaints; 2. most measures lead to increased emissions; 3. only indoor noise comfort is addressed. Step change solutions are proposed to reduce noise in the city environment. The project deals with developing suitable problem identification and evaluation tools and with designing and developing solutions for hot spots, which show high correlation with annoyance and complaints. Following innovative solutions and tools will be developed: 1. Concept of Q zones (zones in inner where only quiet low emission vehicles are tolerated). 2. Concept of parks embedded in Q zones. 3. Improved noise score rating models for indoors by integrating low frequency noise and the occurrence of high noise single events. 4. Noise score rating models for the outdoors. 5. Objective and psychoacoustic evaluation tool for low noise low emission vehicles. 6. Mathematical synthesis tool for noise from low noise low emission vehicles. 7. General performance noise specifications for low noise low emission vehicles. 8. Novel concepts for low noise roads based upon dense elastic road surfaces. 9. Novel concepts for low noise roads based upon grinding of asphalt top layers. 10. Novel concepts for tyres for low noise vehicles, including heavy vehicles. 11. Criteria for use of low noise motorcycles. 12. Active and passive noise attenuation measures within the tyre hood. 13. Solutions for high low frequency absorption at facades of buildings. 14. Solutions for high low frequency isolation in the propagation pad. All the above solutions and tools will be designed, prototyped and validated. They will result in obtaining the anticipated noise impacts.


Grant
Agency: Cordis | Branch: FP7 | Program: CP-FP | Phase: SST.2013.1-1. | Award Amount: 3.56M | Year: 2013

The objective is to provide step changing track based noise mitigation systems and maintenance schemes, to provide reliable improved TSI based rolling noise calculation procedures with harmonized monitoring of the required input parameters and to provide track noise management tools, for use in noise mapping and hot spot action plans according to the END, for use as engineering tools and solutions in new railway projects and in refurbishment projects and for use by the track maintenance managers and track maintenance industry. The existing rolling noise models will be enhanced with new fundamental features: the integration of the low frequency noise emission and of the actual wheel rail contact conditions for more accurate predictions of the noise emitted by the track. On-board monitoring systems will be developed to make it possible to use the real roughness values and track decay rate values measured directly at the track location where maintenance action is required or where mitigating solutions have to be applied. New track solutions, including embedded track systems, will be developed which to yield a noise reduction performance of at least 6 dB(A) in comparison with the global rolling noise measured on a well maintained standard track in the network of the participating infra managers. The solutions will be applicable to tram, LRT and metro tracks as well as to conventional tracks in the whole European Union. The developed solutions should not back-up a poor initial design. This is why attention is paid to a good initial design with a procedure for selecting the best rail type and the best rail hardness in terms of minimising the noise related wear. A procedure for checking the economic viability of the solutions will be developed. This will result in holistic noise management plans for the introduction of the noise abatement solutions and for the noise related track maintenance.

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