FIG. 1 is a front, bottom perspective view of the undercarriage wind deflector for semitrailers in a state of use, showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a right side elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a bottom, front perspective view thereof;
FIG. 9 is a bottom, front, right perspective view thereof
FIG. 10 is a bottom, right perspective view thereof
FIG. 11 is a bottom, rear, right perspective view thereof;
FIG. 12 is a bottom, rear, left perspective view thereof;
FIG. 13 is a bottom, left perspective view thereof;
FIG. 14 is a bottom, front, left perspective view thereof;
FIG. 15 is a top, front, right perspective view thereof; and,
FIG. 16 is a top, front, left perspective view thereof.
The broken lines in FIG. 1 showing wheels and part of a truck, illustrate environmental structure that forms no part of the claimed design. The broken lines showing top, rear, and bottom areas of the wind deflector, illustrate portions of the undercarriage wind deflector for semitrailers that form no part of the claimed design.