Section 81(6) in The Bihar Motor Vehicles Rules, 1992
(6)Having regard to the circumstances of the case the Transport Authority of the region in which the vehicle alongwith its party or passengers happens to be at the time, may for the purpose of extension of the journey, extend the validity of special permit with respect of its expiry or the route on the area, provided the necessary taxes and the fee provided for the grant of such permit is paid.
