Update: 16 April 2026
Overhead lane signal testing continues
We’re continuing our installation of a new lane control system at Saltash Tunnel and across the Tamar Bridge.
Upgrading technology around an operational tunnel and bridge is complex work that must meet strict safety standards.
We’re continuing our rigorous safety testing of the new system to ensure it’s working as it should.
Next week, we’ll be testing the display symbols (red crosses, white arrows, and green arrows) on the new overhead lane signals.
Testing will take place overnight (7.30pm – 6am) on Monday 20 April and Tuesday 21 April.
At certain points during the testing, traffic might be held briefly at temporary traffic signals. This is for the safety of drivers to avoid confusion while the symbol testing is taking place.
While we continue with the installation and testing of the new technology, the current traffic management will remain in place.
Please continue to stay in lane, follow the current traffic management and not the overhead signals.
Road users will be further reminded to stay in lane via our electronic signage boards displaying: ‘Testing overhead signals, stay in lane’.
Please plan ahead and allow extra time for your journey. Dates may change at short notice due to weather or operational reasons.
Coming up:
We expect testing of the overhead signals to be complete in the coming weeks.
The next step will see the tidal flow lane control system switched on. We will inform you in advance of when we expect the system to be switched on and fully operational.
Until then, traffic management will remain in place and road users will need to stay in lane, follow the traffic management and not the overhead signals.
The scheme will fully complete later in 2026.
More information on our scheme, please visit our dedicated webpage.
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Any questions?
Please note: all enquiries regarding the scheme should be directed to National Highways, and not to Tamar Crossings which is independently owned and operated by Cornwall Council and Plymouth City Council.
You can view our dedicated webpage on the scheme, here.
If you have any queries or comments about the work, or would like further information please contact National Highways Customer Contact Centre on 0300 123 5000 or by email: info@nationalhighways.co.uk
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