Section 4(4)(c) in The National Highways Authority of India (the term of office and other conditions of Service of Members) Rules, 2003
(c)having at least twenty five years' regular service in Group 'A' posts in the pay band-3 with pay scale of Rs. 15600-39100/- plus grade pay of Rs.5400/- and above out of which at least one year regular service should be in the Senior Administrative Grade pay band-4 with pay scale of Rs. 37400-67000/- plus grade pay of Rs. 10000/-; and