If direct costs on a network-wide basis referred to in Article 3(1) or direct costs calculated on the basis of modelling referred to in Article 6 multiplied by the number of train kilometres, vehicle kilometres and/or gross tonne kilometre, operated in the reference period are equivalent to either less than 15 % of the full costs of maintenance and renewal or less than the sum of 10 % of maintenance costs and 20 % of renewal costs, the F1Office of Rail and Road may carry out the control referred to in F2regulation 34(1) and (2) of the 2016 GB Regulations or, as the case may be, regulation 34(1) and (2) of the 2016 NI Regulations over the calculation of direct costs on a network-wide basis in a simplified manner. Member States may decide to increase the percentages mentioned in this paragraph to not more than twice the indicated values.

The F1Office of Rail and Road may accept the calculation of the average direct unit costs referred to in Article 5(1) and the modulated average direct unit costs referred to in Article 5(2) and/or cost modelling referred to in article 6 subject to the simplified control referred to in paragraph 1 of this Article if the average direct costs per train kilometre of a 1 000 tonne train amounts to not more than EUR 2 (at 2005 prices and exchange rates, using an appropriate price index).

Simplified controls as referred to in paragraphs 1 and 2 shall be applied independently from one another. Simplified controls shall be without prejudice to F3regulation 34(1) and (2) of the 2016 GB Regulations or, as the case may be, regulation 34(1) and (2) of the 2016 NI Regulations.

The F1Office of Rail and Road shall determine the details of the simplified control.