The sign legend includes all text messages (words and numbers) and symbols intended to convey specific meanings. For purposes of design, borders are included as part of the sign legend. To allow drivers time to understand and respond to the message, the legend and any accompanying symbols must be simple and clear. The size and spacing of letters and symbols is also critical to sign legibility.

Standard Highway Sign Designs for Texas

(SHSD) details dimensions and letter spacing for all standard signs in the

Texas Manual on Uniform Traffic Control Devices

(TMUTCD). If a special sign is needed, the Texas Department of Transportation (TxDOT) Traffic Operations Division (TRF) can assist in the layout of the text.