|FHWA Policy Memorandums|
This attachment shows the design and dimensions for the rectangular LAST IN CORRIDOR Plaque, which is designated as W21-1P. It includes the image of the plaque that has a Yellow background with the words “LAST IN CORRIDOR” spelled out in black letters across the sign.
LEGEND, BORDER - BLACK
BACKGROUND - YELLOW (RETROREFLECTIVE)
United States Department of Transportation - Federal Highway Administration