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It's disappointing but it's not a disastrous opening," said one analyst at an international investment bank in Sydney, who noted the first week traffic numbers were around 28 per cent below the company's forecasts of around 186,000 daily trips during the first month of operations.

However, when combined with a better-than-expected average toll per trip of $3.10, the analyst said average daily revenue during the first week was around 24 per cent below the company's forecasts.

"I think there's a couple of people out there saying this is an end of world scenario for this road but it's certainly not," said the analyst, who declined to be named.