FOR SILENT TRAINS
Lower noise through research
GHH-BONATRANS pays close attention to the issue of noise. Our research and development department has developed a number of solutions reducing noise caused by railway wheel operation. GHH-BONATRANS achieves a reduction of the vibration (and thus also noise) of wheels in operation by application of specially developed noise absorbers mounted on the wheels.
The noise absorbers made by GHH-BONATRANS are able to achieve absorption of the rolling noise by up to 8 dB(A), while the most unpleasant squealing noise of wheels equipped with GHH-BONATRANS noise absorbers is up to 30 dB(A) lower than that of wheels without absorbers, especially in the significant frequency bands. GHH-BONATRANS delivers complete systems specifically designed for different markets such as urban, suburban and passenger transportation as well as for high-speed and very high-speed trains.
With respect for the environment
Rail transport is known and widely accepted for being more environmentally friendly and having a lower carbon footprint than other modes of transport, especially when compared to road transport. Rail transport, however, also has environmental impacts that need to be addressed. This mainly concerns noise associated with operation, be it rolling noise, squealing noise, noise from the drive train or aerodynamic noise in high-speed rail.
Noise from rail transport today not only affects residents living near railway lines, but also represents a growing financial burden for operators. Cities are increasingly dealing with complaints from residents about increased noise. Operators are then forced to reduce speed or night-time operations, which complicates planning, reduces capacity and increases costs.
Quiet rolling stock is therefore important not only for the quality of life of residents, but also for reliable and efficient operation of passenger, freight, and public transport around the world.
Benefits of GHH-BONATRANS noise absorbers:
- High damping effect – up to 8 dB(A) for rolling noise
and up to 30 dB(A) for squealing noise - For all types of rolling stock
- Low weight
- Service life is not limited by service life of wheels
- No special maintenance requirements
- Customized to achieve maximum damping
