People drive past a solar powered traffic sign near Wollongong, 89 km (55 miles) south Sydney May 4, 2009. Australia's government announced a one-year delay to its carbon emissions trading scheme on Monday, promising more support to big industry but opening the door to a tougher 2020 target in a bid to win its approval. REUTERS/Daniel Munoz (AUSTRALIA ENVIRONMENT BUSINESS POLITICS ENERGY)