FIG. 1 is a top, left perspective view of a three section light bar showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a left view thereof;

FIG. 7 is a right view thereof; and,

FIG. 8 is a view of the three section light bar mounted on the roof of a vehicle.

The broken lines in FIGS. 1, 2 and 4-8 depict environmental subject matter internal to the invention and form no part of the claimed design.

The broken lines in FIG. 8 depict environmental subject matter of a vehicle and form no part of the claimed design.