Numeral 4.1.1.5.5 Protection Works of the Hydrology, Hydraulics and Drainage Manual implemented by the National Regulation of Road Infrastructure Management approved by Supreme Decree No. 034 - 2008 - MTC, or in Failing that, any Norm or Regulation established by the National Water Authority for this type of Infrastructure. The calculation of the indicator is established using the following formula: Where: PCNIQ = Critical Points not intervened A &amp; m B %PCNIQ = (1-B), Frequency of Measurements x 100 = Total Critical Points Identified, (see at http://sigrid.cenepred.gob.pe/sigridv3 /) = Critical point identified attended