first wall section 104 a and ballast box 112 b counterbalances effectively the second wall section 104 b the platforms 104 a b are asymmetrical with respect to the longitudinal axis a accordingly the weights of the ballast boxes can be greater than the weights of the wall sections to counter balanced the asymmetrical portion of the platforms the loading of the trailer shown in fig1 e thus serves to balance the weight of the various trailer components with respect to the longitudinal axis a referring now to fig2 a the trailer 100 is shown in its unloaded or deployed configuration as can be seen in fig2 a the wall sections 108 a c have been removed from their loaded positions on top of the platforms 104 a b and connected between the platforms 104 a b to form a protective barrier 200 this is accomplished by removing the wall sections 108 a c such as for example through the use of cranes or a forklift and then disconnecting the two platforms 104 a b from each other after the platforms 104 a b have been disconnected the platforms 104 a b are spatially separated and the wall sections 108 a c are then inserted there between as can be seen in fig2 a the two ballast boxes 112 a b remain in place on top of the platforms 104 a b the ballast boxes provide a counter balance to the weight of the wall sections 108 a c which are disposed on the opposite side of the platforms 104 a b fig2 a shows a view of the.