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• Single tunnel.
• Partial length
resilient mounting
of tunnel.
• Integrated sealing and
resilient mounting
elements.
Brunvoll’s three generations
of LowNoise evolution
• Single tunnel.
• Full length
resilient mounting
of tunnel.
• Double tunnel.
• Full length resilient
mounting
of inner tunnel.
• Acoustic short circuit
at tunnel ends.
• Double tunnel.
• Full length resilient
mounting of
inner tunnel.
• Brunvoll’s outstanding
noise suppression is
confirmed by noise
assessment documentation.
3
2
1
rd
nd
st
Others:
Single
tunnel
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