A graphic representation of symbols encoding data, the graphic representation including a reference symbol having a top and a bottom, the reference symbol top and bottom defining opposing limits of a code line, at least one graphic symbol, representing encoded information regarding a static road condition for processing by a vehicle moving along the road, disposed between the opposing limits of the code line, wherein the information is represented by a ratio of a height of each graphic symbol to the height of the reference symbol and by each symbol's position relative to the opposing limits of the code line, and wherein the reference symbol indicates a beginning of encoded information and a direction for decoding the encoded information.