Section 7(6)(a) in Sikkim Nationalised Transport (Prevention of Ticketless Travel and Miscellaneous Provisions) Rules 1983
(a)Detention Or Demurrage Charges:(i)for full truck weighing 5 tons or more at the rate of Rs. 30/ per hour or part of an hour up to three hours;(ii)full truck weighing less than 5 tons at the rate of Rs. 20/-per hour or part thereof upto three hours;(iii)for detention exceeding three hours the charges for trucks referred to in clauses (i) and (ii) shall be Rs. 45/- and Rs. 50/respectively.