Variable Message Signs

La description

VARIABLE MESSAGE SIGNS, short for VMS.  The phrase “VMS” is referred to exclusively throughout the contents of this document.  However, other commonly used terms describing highway signs that can display different messages are found within National and New York State publication and policy documents.  Examples of these terms are as follows: 
• “VMS” (Variable Message Sign) shall mean a device to display a variety of text messages to motorists traveling the Thruway.   It is a traffic control device that typically suggests motorists alter their driving in some manner and take appropriate actions.  A VMS is not typically used as a regulatory sign as recognized within the MUTCD. 
• “CMS” (Changeable Message Sign) shall mean a non-static sign that supports a limited number 
of fixed messages.  An example would be the rotating drum sign used in E-ZPass operations.  
This term is currently contained in the ***3 edition of the Federal MUTCD.  
• “CEVMS” (Changeable Electronic Variable Message Sign) shall mean a changeable message 
sign of a digital/LED-LCD display type that conforms to Federal and State statutes.   
• “DMS” (Dynamic Message Sign) shall mean a changeable message sign as part of the NTCIP 
(National Transportation Communication for ITS Protocol).  
• “BOARDS” shall mean changeable message signs as used in the Authority’s Traffic Safety