Chevron Signs (MUTCD W1-8) indicate a change in the horizontal alignment of the roadway. Even narrowing of the road can be indicated with Chevron signs. You may find several of these signs on the outside of a sharp curve or approaches to a narrow bridge. On curves, chevron signs may be used as an alternate or supplement to standard delineators and edge lines. Both Chevron Alignment Left Sign and Chevron Alignment Right Sign are vertical rectangles with no border.