Clay County Traffic Signal Upgrade

Project Description: Project to upgrade signals in Clay County to Advanced Traffic Controllers and replace fiber communications to them. Initial deployment as part of SR 21 rebuild through Keystone Heights.

Project Status: Ongoing

Project Stakeholders:

Clay County Public Works Traffic Control Division

Project Inventory:

Interconnect and Flow

Diagrams

Project Service Packages:

TM03: Traffic Signal Control (Clay County Signal Control System)

Project Information Flows:

Information Flow	Source Element	Destination Element	Status
right-of-way request notification	Clay County Field Equipment	Clay County Signal Control System	Ongoing
signal control commands	Clay County Signal Control System	Clay County Field Equipment	Ongoing
signal control device configuration	Clay County Signal Control System	Clay County Field Equipment	Ongoing
signal control plans	Clay County Signal Control System	Clay County Field Equipment	Ongoing
signal control status	Clay County Field Equipment	Clay County Signal Control System	Ongoing
signal fault data	Clay County Field Equipment	Clay County Signal Control System	Ongoing
signal system configuration	Clay County Signal Control System	Clay County Field Equipment	Ongoing
traffic detector control	Clay County Signal Control System	Clay County Field Equipment	Ongoing
traffic detector data	Clay County Field Equipment	Clay County Signal Control System	Ongoing
traffic images	Clay County Field Equipment	Clay County Signal Control System	Ongoing
video surveillance control	Clay County Signal Control System	Clay County Field Equipment	Ongoing

Project Functional Requirements (Element - Functional Object):

Clay County Field Equipment - Roadway Signal Control

1: The field element shall control traffic signals under center control.
2: The field element shall respond to pedestrian crossing requests by accommodating the pedestrian crossing.
3: The field element shall provide the capability to notify the traffic management center of pedestrian calls and pedestrian accommodations.
4: The field element shall report the current signal control information to the center.
5: The field element shall report current preemption status to the center.
6: The field element shall return traffic signal controller operational status to the center.
7: The field element shall return traffic signal controller fault data to the center.
8: The field element shall report current transit priority status to the center.
10: The field element shall receive request for transit vehicle signal priority.
15: The field element shall receive requests for emergency vehicle signal preemption.

Clay County Signal Control System - TMC Signal Control

1: The center shall remotely control traffic signal controllers.
2: The center shall accept notifications of pedestrian calls.
3: The center shall collect traffic signal controller operational status and compare against the control information sent by the center.
4: The center shall collect traffic signal controller fault data from the field.
5: The center shall manage (define, store and modify) control plans to coordinate signalized intersections, to be engaged at the direction of center personnel or according to a daily schedule.
6: The center shall implement control plans to coordinate signalized intersections based on data from sensors.
7: The center shall manage boundaries of the control sections used within the signal system.
8: The center shall maintain traffic signal coordination including synchronizing clocks throughout the system.
9: The center shall implement control plans to coordinate signalized intersections based on data from sensors and connected vehicles.
10: The center shall adjust signal timing in respond to a signal prioritization, signal preemption, pedestrian call, multi-modal crossing activation, or other requests for right-of-way.
14: The center shall support requests from emergency management centers to provide responding emergency vehicles with signal preemption.
17: The center shall remotely control devices to detect traffic in the vicinity of traffic signals.

Standards:

Project Operational Concepts:

Roles and Responsibilities

Clay County Public Works Traffic Control Division

Coordinate emergency traffic signal control with the county EOC/Warning Point.
Coordinate traffic information with adjoining counties or with cities within Clay County.
Coordinate traffic information with Florida Department of Transportation (FDOT) District 2 and the City of Jacksonville traffic engineering division.
Obtain traffic images and traffic flow data using closed-circuit televisions (CCTVs) and field sensors from Clay County, and maintain operational control of all field equipment.
Operate traffic signal systems on county-owned roads.
Provide emergency signal preemption for county fire/emergency medical service (EMS) agencies.
Provide interconnection between railroad equipment and traffic signal systems to update signal timing when highway-rail intersections (HRIs) are blocked by trains.

Last Updated 5/25/2023