Transurban on track despite earnings dip TOLL road operator Transurban expects to maintain its record of rising distributions despite a lower interim profit and a disappointing debut for one of its US projects. Net profit for the December half-year retreated 16 per cent from $96.6 million to $81.1m due to the maturity of low-interest infrastructure bonds, which provided a $33.4m pre-tax benefit in 2011.