HS2 noise levels

Readers letters

The proposed HS2 route will pass some 200m from Wendover high street

I write to seek advice from your learned readership.

The “Wendover HS2 Action Group” have issued a leaflet which states: “The trains are expected to generate a 'pass-by' noise level of at least 95dba at 25m.” This assuming a train running at 250mph on a 25m track bed, on a 10m high viaduct, within a 75m wide strip.

The sound field generated by the train will have components of power unit noise, traction noise and aerodynamic noise. Of particular concern might be its interaction with a sound field generated by a train travelling in the opposite direction at a closing speed of some 500mph: sound power, pressure and intensity levels”

What is the state of knowledge in this field? R&D, analyses, mathematical modelling, operating experience, etc?

Wendover “gateway to the Chilterns” is mentioned in the Domesday book and has had a railway connection to London since 1892.

The proposed HS2 route will pass some 200m from the high street. Is the rural peace of this ancient market town soon to be shattered: should the horses be nervous?

Since excessive noise generation may yet prove to be the achilles 'heel of the current track configuration, some informed discussion in your “letters section” would provide an invaluable contribution.