The ornamental design for a trafficconeinsert, as shown and described.
FIG. 1 is a perspective view of a traffic cone insert with one of its heads disposed in a traffic cone to show an example of how the traffic cone insert is used.
FIG. 2 is a rear perspective view of the traffic cone insert.
FIG. 3 is a left side view side thereof.
FIG. 4 is a rear elevation view.
FIG. 5 is a front elevation view.
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines shown in the drawings are for environmental purposes only and form no part of the claimed design.