Noise reduction activities

To gain new insights into noise protection measures on infrastructure, we are involved in various research and development projects and test innovative products. In conjunction with the start-up Phononic Vibes, we have developed an innovative solution for a transparent soundproof noise barrier. The MetaWindow No. 54 blends in visually with its surroundings and has sound-absorbing properties comparable to those of conventional noise barriers. The transparent barriers are being used for the first time along the S4 route in Hamburg in an operational test.

In conjunction with the German Center for Rail Transport Research (DZSF) and our partners from industry, we intend to continue to advance the research and development of noise and vibration protection measures for track infrastructure and rolling stock. At InnoTrans 2024, the EBA and DB InfraGO signed a cooperation agreement that provides for long-term collaboration on the construction and operation of an innovative test noise barrier in the DZSF’s open digital test field. This facility will make a significant contribution to researching and testing new noise reduction technologies.

The loud function test of the macrophones of our locomotives and multiple units is disturbing for residents living near rail facilities. Until now, this had to be carried out daily due to safety requirements. Together with the Association of German Transport Companies (VDV), DB Regional, DB Long-Distance and DB Cargo are developing a procedure for ending the acoustic function test of the macrophone. In this way, DB Regional and DB Long-Distance were able to determine as early as 2024 that no unmanageable risks would arise from the elimination of the acoustic macrophone test (except ICE 2) in the preparatory service. On this basis, the daily acoustic function tests of the macrophones No. 34 are no longer necessary. DB Cargo is working intensively on extensive testing to implement the same procedure while at the same time ensuring the necessary safety standards.

We are also focusing on the further development of noise protection measures on our vehicles. We have therefore successfully further developed the innovative wheel sets with absorber rings tested as part of the BMVI“Innovative freight wagon” project with the manufacturer and subjected them to further operational testing. This has shown that the required operational capability is fulfilled, but the expected effectiveness in practical application could not be proven. The measure will, therefore, not be implemented.

Deviations from the forecast

The development of the track kilometer noise-remediated corresponds to our forecast in the 2023 Integrated Report.