Recently, a tunnel in one of the major toll road - M5(Motorway5) that links Central Sydney to the South West, Southern Highlands, Canberra and beyond was shutdown due to a computer glitch. This was the second time in 4 months this has happened.
I heard in the 2UE radio that why do you need a computer to operate the tunnel. I read in papers that the computer control the fresh-air inflow to the tunnel and monitors the temperature etc.
May be the tunnel operator didn't upgrade his h/w or didn't purchase license for the software.
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