Section 2(1)(a) in The High Court Judges Travelling Allowance Rules, 1956
(a)When travelling by railway, -(i)to a reserved two-berth compartment of the highest class including air-conditioned and if one such compartment is not available, then to a reserved four-berth compartment of the highest class (but excluding air conditioned);(ii)if such a compartment is provided, to take his spouse along with him without payment of the fare: and(iii)to the fares at the lowest class rates actually paid for servants not exceeding two in number;