Traffic signs are a graphic representation of rules that determine where and how we should drive. The Z3 chevron is not classified as a traffic sign, but as a category Z traffic facility. Stay on the road! The message of the Z3 is very clear, easy and intiuitive to understand without having to know the internal rules of the traffic system. Predominantly, it marks a dangerous curve where a driver has to slow down significantly and follow the direction of the chevrons. The sign may consist of a single chevron, or a set of individual chevrons placed one after another.