Decision

Upgrade of signalling systems in the Heathrow Tunnel: decision

Letter confirming that authorisation is required for signalling systems renewal and upgrade work in the Heathrow Tunnel.

Documents

Upgrade of signalling systems in the Heathrow Tunnel: decision letter

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Details

A decision letter concerning the fitting of a signalling system which has a minor non-compliance with the EU standard.

Published 7 December 2016