The trained professionals at Highway Supply are here for all of your message board, arrow board, and radar trailer needs. From general maintenance to full board repair, Highway Supply you covered! At Highway Supply, we ensure your arrow boards, variable message boards and speed trailers are working properly to keep your workers and community safe. We service boards from industry leaders such as ADDCO, Wanco, National Signal, and many more! Whether you need trouble shooting or a new bulb, Highway Supply can do it all.