Abstract: A mobile sign carrier that mounts on a vehicle receiver hitch and method of use are provided. The mobile sign carrier has a base, a vertical piece and two cross pieces that fold down to form a cross shape. Four sliding brackets are provided, each having permanently attached a square, flat piece, which sliding brackets are mounted one each on each of the cross pieces and one each on the first end and the second end of the vertical piece. The sliding brackets are positioned and secured by means of a fastener to accommodate signs of different sizes. The mobile sign carrier provides a securing device for use on a vehicle with a tailgate. Safety chains further secure the vertical piece to the trailer hitch. A strobe light and night reflective tape are provided.