sonRAIL - Noise Emissions of Various Rail Vehicles
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Final customer: FOEN Federal Office for the Environment (Switzerland)
Customer: FOEN Federal Office for the Environment (Switzerland)
Duration: 2007 - ...
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Customer Requirement
The aim of the developing sonRAIL is to establish a forward-looking noise model, in order to enable the quantification of the noise emission of the railroad that the residents along the lines are subjected to. sonRAIL is meant to extend the regulations of SemiBEL which don’t fulfill the nowadays requirements (noise barriers, high speeds) anymore. To establish the noise model, an emission model is needed that enables to conclude which noise is emitted by which vehicle (passenger train, freight wagon, commuter train) under certain line routing conditions (bend, straight line, switch) and on certain tracks (sleeper and rail types etc.). As a basis for the emission model, extensive noise measurements are executed on the lines Fribourg – Lausanne and Rothrist – Wanzwil (new track line). Additional measurements are performed in order to validate the emission model and to establish the emission of trains at speeds above 160 km/h.
Realisation
PROSE is commissioned by the Federal Office for the Environment (FOEN) to perform the noise emission measurements, thereby being in charge of the measurements as well as of the operation of the railway system. To perform the noise emission measurements on the line Rothrist – Wanzwil three test points on two sites are operated. For the measurements between Fribourg and Lausanne 12 test points on 10 sites are operated. The measurements are performed in parallel and within a measurement setup that complies with EN 3095. In addition to the noise measurements, the track roughness and vertical track acceleration are quantified in order to establish the wheel roughness indirectly. Furthermore, to ensure a better modeling due to more exact information on the wheel roughness, PROSE decides to operate two measurement trains – in addition to the usual trains – and to establish their wheel roughness too. This allows for a detailed modeling of the stimulus. PROSE has many years of wide experience in organizing and performing noise measurements on railway vehicles as well as organizing the operating. Furthermore, PROSE has conducted many type test measurements as well as troubleshooting measurements and noise remediations.
Customer Advantage
To organize noise emission measurements is a great challenge that requires: two measurement trains, running up to 12 measuring sites in parallel, organizing appropriate safeguards at the test points, coordinating 12 measuring teams from several companies in order to enable the comparison of the results during evaluation evaluating and administrating approx. 30 GB performance data of more than 3000 pass-byes. Due to PROSE’s wide experience with measurements in the railroad field, its experience in handling great amounts of data as well as in organizing operational services in cooperation with the participating railways, PROSE is the ideal partner for the Federal Office for the Environment to organize and implement the noise emission measurements.