User:Rafaelmanman/sandbox/Arrow Board

=Arrow board= Arrow boards, also called arrow panels are a road traffic control device that consists of a board mounted with a matrix of lights that are capable of creating flashing and sequential displays, most commonly arrows and chevrons. Arrow boards can also be mounted onto vehicles, so that they are mobile and can be easily moved.

United States
In the United States, arrow boards are split into three categories, Type A, Type B, Type C, and Type D.