Back in May, Infrastructure Australia released a report forecasting a massive 290% increase in the costs of congestion by 2031, unless there is massive investment in new roads and public transport, with Melbourne most badly affected:
IA says the cost of road delays in the six largest capital cities was $13.7 billion in 2011, but is projected to grow by around 290 per cent to $53.3 billion in 2031 without measures including new roads and more public transport funding.