3. Deemed coverage: A local authority can nominate up to 30% of its eligible network for “deemed coverage”. These are sections of the network that are known, on the basis of earlier surveys or local knowledge to be structurally sound (this will usually imply an estimated residual life of at least 10 years) and where currently it would be wasteful to carry out a deflectograph survey. Sections of road with deemed coverage will be taken into account in calculating the performance indicator (see above) and will also affect the minimum coverage (see Note 2(i) above). Local authorities wishing to nominate parts of their eligible network for deemed coverage should specify the sections that they have nominated and give the basis of the nomination (previous survey, recent maintenance etc.).