Lexington Area ITS Architecture

LFUCG Variable Speed Limit Signs

Status

Planned

Description

Variable speed limit signs

Stakeholders

Stakeholder	Role	Role Status
LFUCG	Owns	Planned

Physical Objects

ITS Roadway Equipment

Functional Objects

Functional Object	Description	User Defined
Roadway Variable Speed Limits	'Roadway Variable Speed Limits' includes the field equipment, physical overhead lane signs and associated control electronics that are used to manage and control variable speed limits systems. This equipment monitors traffic and environmental conditions along the roadway. The system can be centrally monitored and controlled by a Traffic Management Center or it can be autonomous, calculating and setting suitable speed limits, usually by lane. This application displays the speed limits and additional information such as basic safety rules and current traffic information to drivers.	False

Physical Standards

SDO	Document #	Title	User Defined
ITE	ITE ITS Cabinet	ITS Standard Specification for Roadside Cabinets	False
NEMA	NEMA TS 8	Cyber and Physical Security for Intelligent Transportation Systems (ITS)	False

Interfaces To

(View Context Diagram)

Driver
LFUCG Traffic Management Center