A system, method and assembly for performing traffic sign inspections is provided. In one embodiment, the assembly includes a first plurality of sheetings that each have a combination of retroreflectivity and color that is different from the combination of retroreflectivity and color of each of the other first plurality of sheetings; a first clamp and second clamp for clamping one of said first plurality of sheetings to a traffic sign; a first handheld light source; and a first enclosure for removably housing the first plurality of sheetings, said first and second clamps, and said first handheld light source. The assembly may further include a second enclosure for removably housing a second plurality of sheetings that each has a combination of retroreflectivity and color that is different from the combination of retroreflectivity and color of each of the other second plurality of sheetings.