a) (i) Toll prices are revised once every year effective 1 March, or closest subsequent date, determined by the Minister’s approval of the tariffs and their publication in the gazette.
a) (ii) The average CPI during the previous 12 months (November to October) or, in the case of concessions (public private partnerships), the year on year CPI, as determined by the respective concession agreements.
b) Three price increases in the past three financial years, one per year, effective 7 March 2015, 1 March 2016 and 3 March 2017. GFIP e-tolls were not adjusted in 2015; they were adjusted in 2016 and 2017.
c) Details of the increases are as follows: