I claim the ornamental design for a signaling jacket, as shown and described.
FIG. 1 is a rear elevational view showing my new design for a signaling jacket with the arrangement of signal lights disposed along its left arm in exploded view;
FIG. 2 is a front elevational view showing my new design for a signaling jacket;
FIG. 3 is a top plan view thereof;
FIG. 4 a left elevational view thereof, the right elevational view being a mirror image of the left elevational view;
FIG. 5 is a rear elevational view showing a motorcyclist seated upon a motorcycle and wearing a signaling jacket that bears my new design for a signaling jacket; and,
FIG. 6 is an enlarged fragmentary view taken from FIG. 1.
The seams, pockets, buttons and other common jacket features shown in phantom in FIGS. 1-5, as well as the clothed person and the motorcycle shown in phantom in FIG. 5, are all shown for illustrative purposes only and form no part of the claimed design.