US Patent 9481969 Mobile barrier

A safety trailer including first and second platforms, at least one of the first and second platforms having an axle and wheels attached thereto; a plurality of interconnected wall sections positioned between and connected to the first and second platforms, the plurality of wall sections defining a protected work area on a side of the trailer; and wherein each wall section has a plurality of full height and partial height wall members, the full height wall members extending substantially the height and width of the wall section and the partial height wall members extending substantially the width but less than the height of the wall section, the full height and partial height members alternating along a length of the wall section.