Section 271(1) in The West Bengal Motor Vehicles Rules, 1989
(1)An application for the approval of a new design of trailer manufactured in India and intended to be used as a transport vehicle shall be sent to the Secretary, Transport Department in triplicate by the manufacturer or his authorised assembler in Form TLDA. Such application shall be accompanied by three copies of each of the following, in addition to other documents mentioned in the form of application :-(i)Full specifications.(ii)Drawings giving all the dimension and details.(iii)Set of design calculations of -(a)Axles;(b)Spring;(c)Long bearers;(d)Cross bearers;(e)Platform tank or anything that may be carried on the cross bearers;(f)Tow bar;(g)Turn table of two axle trailers;(h)Braking arrangements;(i)Any other items such as shock absorbers, if included.
