Changeable message sign | legal definition of
Define Changeable message sign. means a sign or portion thereof on which changing copy or symbols are electronically controlled (for example, time and temperature units), or manually through placement of copy or symbols on the same sign surface.CHANGEABLE MESSAGE SIGN (CMS) USAGE PROCEDURE Executive,,Changeable Message Signs (CMS), Dynamic Message Signs (DMS), and Variable Message Signs (VMS) offer very subtle differences. In practice, these terms have become interchangeable. For the purpose of this document, the term CMS is used, and defined as a programmable traffic control device that can usually display any combination of characters to present messages to motorists. NumerousChangeable electronic variable message sign | legal,,Changeable electronic variable message signs include, but are not limited to, tri- vision and other rotating slat technology. The use of changeable electronic variable message sign (CEVMS) technology, shall not, in itself, constitute the use of flashing, intermittent or moving light or lights.