The new Hindhead tunnel suffered its first traffic snag today.
A faulty overhead sign caused the northbound section of the tunnel to briefly close and motorists approaching the tunnel from the south faced delays.
The technical issue resulted in both northbound lanes being closed from 8.30pm last night while workmen sought to fix the problem.
It was opened 20 minutes later after the tunnel was discovered clear but at 11.55pm a signalling problem with one of the signs showed lane two to be closed.
The northbound section of the tunnel was fully open again by 11.50am this morning after workers resolved the technical problem.
A spokesman for the Highways Agency said: ‘There is a lot of technology in the tunnel and some of the equipment is bound to fail at some point, but what is important is that we have a fail safe programme that will deal with the issue safely and correctly, and that’s exactly what it did.’
The southbound section of the tunnel, which improves the A3 link between Portsmouth and London, was opened on Wednesday last week and the northbound lanes were opened two days later.
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