The Central Motor Vehicles Rules, 1989.State Rules of Bihar · 1988
(l)The appeal referred to in rule 45 shall be preferred in duplicate in the form of a memorandum, setting forth the grounds of objections to the order of the registering authority and shall be accompanied by appropriate fee as specified in rule 81 and a certified copy of the order appealed against.
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(2) The appellate authority, after giving an opportunity to the parties to be heard and after such enquiry, if any, as it deems necessary, pass appropriate orders 66[within the period of thirty days from the date of receipt of such an appeal].