St. Johns County DMS Enhancements

Project Description: This project will deploy DMS to provide traveler information on St Johns County roadways. This is an on–going project addressing DMS enhancements in stages.

Project Status: Ongoing

Project Stakeholders:

• St. Johns County Traffic and Transportation Department

Project Service Packages:

• TM06: Traffic Information Dissemination (St. Johns County Traffic Signal System)

Project Information Flows:

Information Flow	Source Element	Destination Element	Status
roadway dynamic signage data	St. Johns County TMC	St. Johns County Field Equipment	Ongoing
roadway dynamic signage status	St. Johns County Field Equipment	St. Johns County TMC	Ongoing

Project Functional Requirements (Element - Functional Object):

• St. Johns County Field Equipment - Roadway Traffic Information Dissemination
• 1: The field element shall include dynamic message signs for dissemination of traffic and other information to drivers, under center control; the DMS may be either those that display variable text messages, or those that have fixed format display(s) (e.g. vehicle restrictions, or lane open/close).
• 3: The field element shall provide operational status for the driver information systems equipment (DMS, HAR, etc.) to the center.


• St. Johns County TMC - TMC Traffic Information Dissemination
• 1: The center shall remotely control dynamic messages signs for dissemination of traffic and other information to drivers.
• 3: The center shall collect operational status for the driver information systems equipment (DMS, HAR, etc.).

Standards:

• US: NTCIP Message Sign - SNMPv3/TLS

Project Operational Concepts:

Roles and Responsibilities

• St. Johns County Traffic and Transportation Department
• Provide traffic information to travelers using St. Johns County DMS equipment.