We claim, an ornamental design for a road barrier infrastructure unit, as shown and described.
FIG. 1 is a rear prospective view of a road barrier infrastructure unit showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a is a front plan view thereof; and,
FIG. 7 is a back plan view thereof.
The broken-line disclosure in the views is generally understood to form part of the environment in which the claimed design is embodied, but forms no part of the claimed design.
In addition, the dash-dot-dash lines indicate a repeating pattern of openings, wherein the element may have openings of any shape and number that follow this repeating pattern.