The main transport workers' union in NSW has called on the state government to scrap fares on public transport as more people ditch cars due to the rising cost of petrol.With diesel reaching above $3 a litre in some parts of the country, and unleaded not too far behind, more people are using public transport to commute to and from work.With higher inflation and interest rates also contributing to cost-of-living pressures, the Rail, Tram and Bus Union (RTBU) believes public